1: You are creating a report recommending the use of VLANs in your network. Which of the following features are provided by VLANs? (Choose three.)
A. Segmentation
B. Flexibility
C. Logging
D. Security
2: Which of the following statements regarding VLANs is true?
A. A VLAN is a physical broadcast domain spanning multiple logical subnets.
B. A VLAN is a logical broadcast domain spanning multiple physical subnets.
C. A VLAN is a logical broadcast domain spanning multiple logical subnets.
D. A VLAN is a physical broadcast domain spanning multiple physical subnets.
3: On which of the following devices can you implement VLANs?
A. Bridges
B. Routers
C. Hubs
D. Switches
4: Which of the following allows a port to carry traffic for multiple VLANs?
A. Port spanning
B. A trunk
C. Fast Ethernet
D. Split horizon
5: Which of the following are membership modes supported by VLANs? (Choose two.)
A. Public
B. Private
C. Static
D. Dynamic
6: You need to configure a VLAN Management Policy Server. Which of the following switches can fill this role? (Choose two.)
A. Catalyst 1924
B. Catalyst 2950
C. Catalyst 5000
D. Catalyst 6509
7: Which piece of information is used by a VLAN Management Policy Server to dynamically assign a port to a VLAN?
A. Source IP address
B. Source hostname
C. Source MAC address
D. Source port
8: Which of the following statements about VLAN Membership modes are correct? (Choose two.)
A. A dynamic port can belong to multiple VLANs at once.
B. Multiple hosts from different VLANs can be active on a dynamic port.
C. The Catalyst switch queries a VMPS when a frame arrives on a dynamic port.
D. The VMPS contains a database mapping MAC address to VLAN membership.
9: Which of the following technologies are methods to implement trunking? (Choose two.)
A. 802.1Q
B. WEP
C. ISL
D. IEEE 1394
10: In 802.1Q trunking, what is the default native VLAN ID?
A. VLAN 0
B. VLAN 1
C. VLAN A
D. There is no default VLAN ID.
11: Which of the following statements about 802.1Q frame tagging are correct? (Choose two.)
A. The 802.1Q protocol tags frames for the native VLAN.
B. The 802.1Q protocol doesn't tag frames for the native VLAN.
C. Tagged frames can be read by ordinary stations.
D. Tagged frames cannot be read by ordinary stations.
12: Adding a tag recomputes which portion of the 802.1Q frame?
A. Destination
B. Source
C. Data
D. FCS
13: Which of the following are characteristics of ISL? (Choose three.)
A. Vendor interoperability
B. Supports full-duplex
C. Supports half-duplex
D. Trunking
E. Encryption
F. Authentication
14: ISL functions at which layer of the OSI Model?
A. Physical layer
B. Data-link layer
C. Network layer
D. Session layer
15: What does ISL use to confirm that a frame has not been damaged during transit?
A. CRC
B. Digital signature
C. Data integrity
D. BPDU
16: The VTP functions at which layer of the OSI Model?
A. Physical layer
B. Data-link layer
C. Network layer
D. Session layer
17: Which of the following is the primary function of VTP?
A. Encryption
B. Authentication
C. Pruning
D. Messaging
18: How many VTP domains can a switch be configured in?
A. 1
B. 64
C. 255
D. Unlimited
19: Which of the following are modes under which VTP operates? (Choose three.)
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
20: You have installed a Catalyst switch in your network. Which VTP mode is it operating in by default?
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
21: Where are VLAN configurations stored?
A. RAM
B. NVRAM
C. Flash
D. They are not stored.
22: Which of the following is a VTP mode and does not save configuration information?
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
23: Which of the following are VTP modes with the capability to create, modify, and delete VLANs? (Choose two.)
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
24: Which of the following VTP modes forward advertisements? (Choose three.)
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
25: Which of the following VTP modes does not synchronize its information?
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
26: By default, how often are VTP advertisements sent?
A. 30 seconds
B. 1 minute
C. 5 minutes
D. 10 minutes
27: Which transmission method does VTP use to send advertisements?
A. Broadcast
B. Unicast
C. Multicast
D. Groupcast
28: Which of the following commands resets the configuration revision number on a Catalyst switch?
A. vtp reset
B. vtp server reset
C. delete vtp
D. vtp revision 0
29: When a switch receives advertisements containing conflicting VLAN configuration information, how is the conflict resolved?
A. The first advertisement received is processed.
B. The last advertisement received is processed.
C. The latest time stamp is kept.
D. The highest revision number is kept.
30: Which process uses VLAN advertisements to determine when a trunk connection is unnecessarily flooding traffic?
A. Flood detection
B. Broadcast quenching
C. Flood quenching
D. VTP pruning
31: Which of the following VTP modes supports the enabling of VTP pruning?
A. Server
B. Client
C. Peer
D. Transparent
E. Static
F. Dynamic
32: On a Catalyst 2950, what is the default VTP domain name?
A. VLAN1
B. VLAN0
C. VTP 0
D. None
33: Which mode must you be in to configure a VTP domain for a Catalyst 2950 switch? (Choose the best answer.)
A. Privileged EXEC mode
B. Global Configuration mode
C. VLAN Configuration mode
D. User EXEC mode
34: You want to configure a trunk port on a Catalyst 5000 series switch to use desirable negotiation. What command must you enter?
A. trunk desirable
B. TRunk negotiation desirable
C. set trunk desirable
D. negotiation desirable
35: You need to assign a port as the trunk port. What configuration mode must you be in?
A. Privileged EXEC mode
B. Global Configuration mode
C. Interface Configuration mode
D. User EXEC mode
36: What command enables pruning on a Catalyst 2950 switch?
A. vtp pruning on
B. pruning on
C. vtp pruning enable
D. pruning enable
37: Which of the following commands defines cisco01 for your VTP domain name?
A. vtp name cisco01
B. vtp domain cisco01
C. vtp domain name cisco01
D. domain cisco01
38: You are configuring a trunk on your Catalyst 2950 switch. Which command is appropriate?
A. switchport trunk
B. port trunk
C. switchport mode trunk
D. port mode trunk
39: Which of the following are considered true trunking protocols? (Choose two.)
A. ISL
B. VTP
C. 802.1q
D. 802.1d
40: Which mode must you be in to configure an ISL trunk port?
A. Interface Configuration mode
B. Port Configuration mode
C. Global Configuration mode
D. Line Configuration mode
41: You are trying to create VLANs that will be automatically propagated out to all other switches. You create the VLANs, but they are not propagated to other switches. You type the show vtp status command and receive the following output. What is wrong?
VLANSwitch> show vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 250
Number of existing VLANs : 18
VTP Operating Mode : Transparent
VTP Domain Name :
VTP Pruning Mode : Enabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0xBF 0x84 0x94 0x33 0xFC 0xAF 0xB5 0x70
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00
A. You must first disable VTP pruning to allow the revisions to propagate.
B. The VTP version number is wrong.
C. You need to change the VTP mode to Client mode.
D. You need to change the VTP mode to Server mode.
42: What is the maximum number of VLANs that can be configured on a switch?
A. 8
B. 128
C. 255
D. Switch-dependent
43: You have hired a new salesperson. All sales associates are placed in VLAN5. You are adding a port on your Catalyst 2950 switch to VLAN 5. Which commands accomplish this goal?
A. wg_sw1(config-if)#switchport access vlan 5
B. wg_sw1(config)#vlan-membership port vlan 5
C. wg_sw1(config-if)#vlan-membership static 5
D. wg_sw1(config) #port membership vlan 5
44: Which statement is accurate when describing the role of a VLAN in a corporate network?
A. It can be used to reduce the segments in a network.
B. It can be used to reduce broadcasts/multicasts in a network.
C. It reduces the security capability of a network.
D. It does not allow Quality of Service to be deployed.
45: You want to view VLAN information for your Catalyst 2950, including when the configuration was last modified. What command should you enter?
A. show vlan
B. show vtp
C. show vtp status
D. show ports
46: You want to quickly view the VLANs running STP, the number of ports in each VLAN, and the ports on the switch that are blocking. Which command should you enter?
A. show spantree
B. show stp
C. show vlan
D. show vtp
47: A VLAN you created previously is now no longer needed, and you want to remove it. The VLAN is named VLAN4. Which command should you enter?
A. vlan VLAN4 delete
B. no vlan VLAN4
C. delete vlan VLAN4
D. vlan VLAN4 disable
48: On a Catalyst 2950, which mode must you be in to delete a VLAN?
A. VLAN Configuration mode
B. Global Configuration mode
C. Interface Configuration mode
D. Privileged EXEC mode
49: For traffic to pass from one VLAN to another, a ____________ is required that can understand trunking protocols.
A. Router
B. Switch
C. Hub
D. Trunking bridge
50: You want to verify VLAN membership on a Catalyst 2950. You want to display VLAN assignment and membership type for all switch ports; however, you do not want to view any extra information. Which command best displays this information?
A. show vlan short
B. show vlan brief
C. display vtp brief
D. display vtp short
Busines
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Showing posts with label Vlans. Show all posts
Showing posts with label Vlans. Show all posts
11:05 AM
Answers and Explanations
A1: Answers: A, B, and D. A is correct because VLANs can segment stations logically by function or team. B is correct because flexibility is added; users can be grouped by department, cross-functional product teams, or other grouping definitions you choose. D is correct; security is provided because members of one VLAN do not see the traffic on another VLAN. C is incorrect; there is no logging inherent to VLANs.
A2: Answer: B. VLANs are logical broadcast domains, defined by the administrator, and can span multiple physical subnets. A is incorrect because VLANs are logical broadcast domains, not physical. C is incorrect because VLANs span multiple physical subnets, not logical subnets. D is incorrect because VLANs create logical broadcast domains, not physical domains.
A3: Answer: D. VLANs are supported on switches. A is incorrect, as bridges do not support VLANs. B is incorrect because VLANs are not implemented on routers. C is incorrect, as hubs do not provide support for VLANs.
A4: Answer: B. A trunk provides capability for a VLAN to span across multiple switches because it can carry traffic for multiple VLANs. A is incorrect because port spanning is not the technology used to carry traffic for multiple VLANs. C is incorrect because fast Ethernet is a version of Ethernet that can operate at 100Mbps. D is incorrect because split horizon helps prevent routing loops by not sending route information out the interface that received it.
A5: Answers: C and D. C is correct because static mode refers to port assignments configured manually by an administrator. D is correct because dynamic port configuration is supported as well, when using a VLAN Management Policy Server. A is incorrect; there is no public membership mode. B is incorrect, as there is no private VLAN membership mode.
A6: Answers: C and D. The Catalyst 5000 series can be configured as a VMPS, and the 6509 can be configured as a VMPS. A is incorrect, as the Catalyst 1924 does not support configuration as a VMPS. B is incorrect, as the Catalyst 2950 also does not support configuration as a VMPS.
A7: Answer: C. The source MAC address of the sending station is used to assign a port to a specific VLAN. A is incorrect because the source IP address is irrelevant to the server. B is incorrect, as the hostname of the source device is not used to assign VLANs. D is incorrect because the source port of the traffic is not a consideration when assigning VLANs.
A8: Answers: C and D. When a Catalyst switch receives a frame on a dynamic port, it queries the VMPS. The VMPS then checks its database, which contains mappings of MAC addresses to VLANs. A is incorrect because a dynamic port can belong to only one VLAN at a time. B is incorrect because multiple hosts from different VLANs cannot all be active on a dynamic port.
A9: Answers: A and C. The 802.1Q protocol is an IEEE standard, nonproprietary method to implement trunking, and ISL is a proprietary Cisco protocol for implementing trunking. B is incorrect, as WEP is used to secure wireless networks. D is incorrect because IEEE 1394 (also known as FireWire) is a PC communications port.
A10: Answer: B. In 802.1Q trunking, the identifier value of the native VLAN is VLAN 1. A is incorrect because VLAN 1 is the default VLAN, not VLAN 0. C is incorrect because the default VLAN identifier is numerical. D is incorrect, as there is a default VLAN ID (VLAN 1).
A11: Answers: B and D. The 802.1Q protocol doesn't tag native VLAN frames, and tagged frames cannot be read by ordinary stations. A is incorrect because native VLAN frames are not tagged. C is incorrect because the information added when a frame is tagged renders it unreadable by ordinary stations.
A12: Answer: D. Adding a tag recomputes the frame check sequence. A is incorrect because the destination of the frame remains unchanged. B is incorrect, as the source of the frame does not change. C is incorrect because the data remains unchanged.
A13: Answers: B, C, and D. ISL supports full-duplex and half-duplex, and trunking is supported to allow VLAN information among different switches. A is incorrect because ISL is proprietary to Cisco. E is incorrect because ISL does not provide encryption. F is incorrect because ISL does not provide authentication.
A14: Answer: B. ISL functions at Layer 2, the Data-link layer of the OSI Model. A, C, and D are incorrect because ISL does not function at those layers of the OSI Model.
A15: Answer: A. The CRC ensures the frame has not been damaged in transit. B is incorrect because a digital signature is not used by ISL. C is not correct, because even though the idea of data integrity is to ensure that data is not modified, it does not specifically address the question. D is incorrect; Bridge Protocol Data Units indicate whether the frame is a spanning-tree BPDU.
A16: Answer: B. VTP functions at Layer 2, the Data-link layer of the OSI Model. A, C, and D are incorrect because VTP does not function at those layers of the OSI Model.
A17: Answer: D. The primary function of VTP is messaging, to ensure VLAN configuration consistency and the management of additions, deletions, and name changes. C is incorrect. VTP does manage deletions; however, it is not the sole, primary function of VTP. A and B are incorrect because encryption and authentication are not features of VTP.
A18: Answer: A. A switch can be in only a single VTP domain. B, C, and D are incorrect, as a switch cannot belong to 64, 255, or an unlimited number of domains.
A19: Answers: A, B, and D. Server mode is one of three VTP modes of operation; Client mode is a VTP mode of operation that does not allow creation, modification, or deletion of VLANs; and although Transparent mode acts much like Server mode, it does not synchronize information. C, E, and F are incorrect because Peer, Static, and Dynamic are not VTP modes.
A20: Answer: A. Server mode is one of three VTP modes of operation, and is the default. B is incorrect, because although Client mode is a VTP mode of operation that doesn't allow the creation, modification, or deletion of VLANs, it is not the default. D is incorrect, because although Transparent mode acts much like Server mode, it does not synchronize information and is not the default. C, E, and F are not VTP modes.
A21: Answer: B. NVRAM is used to store VLAN configurations, not RAM or flash memory. D is incorrect; configurations are stored in NVRAM in case of a power failure.
A22: Answer: B. Client mode forwards advertisements and synchronizes information. It does not save information in NVRAM. A is incorrect, as Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. D is incorrect, as Transparent mode creates, modifies, and deletes VLANs, and it forwards advertisements and saves configurations in NVRAM, but it does not synchronize. C, E, and F are not VTP modes.
A23: Answers: A and D. Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. D is correct because Transparent mode creates, modifies, and deletes VLANs. B is incorrect; Client mode forwards advertisements and synchronizes information, but it does not save information in NVRAM. C, E, and F are not VTP modes.
A24: Answers: A, B, and D. Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives and synchronizes information. It saves configuration information in NVRAM. Client mode forwards advertisements and synchronizes information. It does not save information in NVRAM. Finally, Transparent mode creates, modifies, and deletes VLANs. C, E, and F are incorrect because they are not VTP modes.
A25: Answer: D. Transparent mode creates, modifies, and deletes VLANs. It forwards advertisements and saves configurations in NVRAM. It does not synchronize, however. A is incorrect because Server mode is a VTP mode that creates, modifies, and deletes VLANs, forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. B is incorrect because Client mode forwards advertisements and synchronizes information but does not save information in NVRAM. C, E, and F are not VTP modes.
A26: Answer: C. VTP advertisements are flooded through the management domain every five minutes by default. Answers A, B, and D are not the default settings.
A27: Answer: C. VTP uses multicast to send advertisements in the management domain. A is incorrect because broadcasts are not used for the propagation of advertisements. B is incorrect because unicasts are not as efficient for sending advertisements as multicast. D is incorrect, as there is no such method in VTP.
A28: Answer: C. The delete VTP command resets the configuration revision number. A, B, and D are invalid commands.
A29: Answer: D. Conflicts are resolved through revision numbers, and the higher revision number is processed. A is incorrect because order of reception is not a controlling factor. B is incorrect; the last advertisement is processed only if it has a higher revision number. C is incorrect because time stamps are not used.
A30: Answer: D. VTP pruning is the process of reducing unnecessary flooded traffic. A is incorrect because flood detection is not a valid method. B and C are incorrect, as broadcast quenching and flood quenching are not valid processes.
A31: Answer: A. Server mode is one of three VTP modes of operation, and is the default. It supports VTP pruning. B is incorrect, as Client mode is a VTP mode of operation that does not allow the creation, modification, or deletion of VLANs, and it doesn't support pruning. D is incorrect, because although Transparent mode acts much like Server mode, it does not synchronize information, and it doesn't support pruning. C, E, and F are not VTP modes.
A32: Answer: D. There is no default VTP domain set. A is incorrect because VLAN1 is simply the management VLAN. B and C are invalid.
A33: Answer: C. VTP domains on a Catalyst 2950 are created in VLAN Configuration mode. A is incorrect, because even as Privileged EXEC mode is required, you must enter the VLAN database command to get to VLAN Configuration mode. B is incorrect because this is valid only for Catalyst 1900 switches, which are now end of life. D is incorrect because no configuration changes can be made in User EXEC mode.
A34: Answer: C. The correct syntax on a Catalyst 5000 switch is set trunk desirable. A is incorrect, as this is the improper syntax for this switch; however, it is correct for a Catalyst 1900 series switch. B is incorrect, as this command does not achieve the desired effect. D is incorrect, as this command results in an error.
A35: Answer: C. Trunk ports are defined in Interface Configuration mode. A is incorrect, because even though Privileged EXEC mode is required, you must then enter Interface Configuration mode. B is incorrect; from Global Configuration mode, you must enter Interface Configuration mode. D is incorrect because no configuration changes are made in User EXEC mode.
A36: Answer: C. The vtp pruning enable command enables pruning on the switch. A and D are incorrect, as these commands result in an error message. B is incorrect because this is an invalid IOS command.
A37: Answer: B. The correct syntax is vtp domain name—in this case, vtp domain cisco01. A and C are incorrect because they are invalid syntax. D is incorrect, as this command is invalid.
A38: Answer: C. The switchport mode trunk command sets the port as a trunk port for 802.1Q traffic. This command is used in Interface Configuration mode. A is incorrect because this command results in an error message. B and D are not valid IOS commands.
A39: Answers: A and C. Interswitch Link and IEEE 802.1q are protocols that help define VLAN traffic over a single link. B is incorrect because VTP is merely a management protocol that helps to propagate VLANs to switches that belong to the same domain. D is incorrect because 802.1d is the IEEE standard for Spanning-Tree Protocol.
A40: Answer: A. You are configuring a port interface, so Interface Configuration mode is required. B is incorrect because there is no such Interface Configuration mode. C is incorrect because this is an interface, not a global setting; thus, Global Configuration mode is not appropriate. D is incorrect because Line Configuration mode is not the correct mode.
A41: Answer: D. A switch must be in VTP Server mode to propagate VLAN information to other switches. A is incorrect, as VTP pruning doesn't stop VTP revisions from propagating; it merely stops broadcasts from going to switches that do not have ports belonging to the VLANs that have the broadcasts. B is incorrect, as the VTP version number doesn't affect the propagation of advertisements. C is incorrect, as clients are unable to create VLANs.
A42: Answer: D. The exact maximum number of VLANs supported is switch-dependent. A, B, and C are incorrect because they are fixed numbers and not switch-dependent.
A43: Answer: A. You go to the particular interface/port you want to assign to VLAN 5 and enter the command switchport access vlan (vlan#). B is incorrect because it is an invalid command. C is incorrect because this assigns a port to a VLAN on a 1900 series switch, not the 2950. D is incorrect because it is an invalid command.
A44: Answer: B. A VLAN is considered its own broadcast domain. It helps contain broadcasts in a networked environment. A is incorrect because a VLAN actually segments the network even more. C is incorrect because VLANs are separate subnets that allow for Access-Lists to be applied, providing greater security. D is incorrect because Quality of Service can harness the power of VLANs to increase its functionality.
A45: Answer: C. The show vtp status command displays the requested information. A is incorrect; this command is valid but does not show the requested information. B is incorrect, as this command is valid for a 1900 series switch. D is incorrect because show ports is an invalid command.
A46: Answer: A. The show spantree command displays the requested information most effectively. B is incorrect because this command is not valid. C and D are valid commands but do not show the requested information.
A47: Answer: B. The no vlan command followed by the VLAN ID is the proper syntax. A is incorrect because this is an invalid IOS command. C is incorrect, and this command results in an error. D is incorrect, as this is not the proper syntax for the requested task.
A48: Answer: A. VLAN Configuration mode is used on Catalyst 2950 switches. B is incorrect; this command is entered in Global Configuration mode on a 1900 series switch. C and D are incorrect, as they are not the proper configuration modes.
A49: Answer: A. The router can route between the different subnets for the VLANs. It also can run ISL or 802.1q. B is incorrect because a Layer 2 switch has no Layer 3 comprehension. C is incorrect because a Hub is merely a multiport repeater with no capabilities to pass traffic between subnets. D is incorrect because there is no such device.
A50: Answer: B. The show vlan brief command displays the required information. A, C, and D are incorrect, as these are invalid IOS commands.
A1: Answers: A, B, and D. A is correct because VLANs can segment stations logically by function or team. B is correct because flexibility is added; users can be grouped by department, cross-functional product teams, or other grouping definitions you choose. D is correct; security is provided because members of one VLAN do not see the traffic on another VLAN. C is incorrect; there is no logging inherent to VLANs.
A2: Answer: B. VLANs are logical broadcast domains, defined by the administrator, and can span multiple physical subnets. A is incorrect because VLANs are logical broadcast domains, not physical. C is incorrect because VLANs span multiple physical subnets, not logical subnets. D is incorrect because VLANs create logical broadcast domains, not physical domains.
A3: Answer: D. VLANs are supported on switches. A is incorrect, as bridges do not support VLANs. B is incorrect because VLANs are not implemented on routers. C is incorrect, as hubs do not provide support for VLANs.
A4: Answer: B. A trunk provides capability for a VLAN to span across multiple switches because it can carry traffic for multiple VLANs. A is incorrect because port spanning is not the technology used to carry traffic for multiple VLANs. C is incorrect because fast Ethernet is a version of Ethernet that can operate at 100Mbps. D is incorrect because split horizon helps prevent routing loops by not sending route information out the interface that received it.
A5: Answers: C and D. C is correct because static mode refers to port assignments configured manually by an administrator. D is correct because dynamic port configuration is supported as well, when using a VLAN Management Policy Server. A is incorrect; there is no public membership mode. B is incorrect, as there is no private VLAN membership mode.
A6: Answers: C and D. The Catalyst 5000 series can be configured as a VMPS, and the 6509 can be configured as a VMPS. A is incorrect, as the Catalyst 1924 does not support configuration as a VMPS. B is incorrect, as the Catalyst 2950 also does not support configuration as a VMPS.
A7: Answer: C. The source MAC address of the sending station is used to assign a port to a specific VLAN. A is incorrect because the source IP address is irrelevant to the server. B is incorrect, as the hostname of the source device is not used to assign VLANs. D is incorrect because the source port of the traffic is not a consideration when assigning VLANs.
A8: Answers: C and D. When a Catalyst switch receives a frame on a dynamic port, it queries the VMPS. The VMPS then checks its database, which contains mappings of MAC addresses to VLANs. A is incorrect because a dynamic port can belong to only one VLAN at a time. B is incorrect because multiple hosts from different VLANs cannot all be active on a dynamic port.
A9: Answers: A and C. The 802.1Q protocol is an IEEE standard, nonproprietary method to implement trunking, and ISL is a proprietary Cisco protocol for implementing trunking. B is incorrect, as WEP is used to secure wireless networks. D is incorrect because IEEE 1394 (also known as FireWire) is a PC communications port.
A10: Answer: B. In 802.1Q trunking, the identifier value of the native VLAN is VLAN 1. A is incorrect because VLAN 1 is the default VLAN, not VLAN 0. C is incorrect because the default VLAN identifier is numerical. D is incorrect, as there is a default VLAN ID (VLAN 1).
A11: Answers: B and D. The 802.1Q protocol doesn't tag native VLAN frames, and tagged frames cannot be read by ordinary stations. A is incorrect because native VLAN frames are not tagged. C is incorrect because the information added when a frame is tagged renders it unreadable by ordinary stations.
A12: Answer: D. Adding a tag recomputes the frame check sequence. A is incorrect because the destination of the frame remains unchanged. B is incorrect, as the source of the frame does not change. C is incorrect because the data remains unchanged.
A13: Answers: B, C, and D. ISL supports full-duplex and half-duplex, and trunking is supported to allow VLAN information among different switches. A is incorrect because ISL is proprietary to Cisco. E is incorrect because ISL does not provide encryption. F is incorrect because ISL does not provide authentication.
A14: Answer: B. ISL functions at Layer 2, the Data-link layer of the OSI Model. A, C, and D are incorrect because ISL does not function at those layers of the OSI Model.
A15: Answer: A. The CRC ensures the frame has not been damaged in transit. B is incorrect because a digital signature is not used by ISL. C is not correct, because even though the idea of data integrity is to ensure that data is not modified, it does not specifically address the question. D is incorrect; Bridge Protocol Data Units indicate whether the frame is a spanning-tree BPDU.
A16: Answer: B. VTP functions at Layer 2, the Data-link layer of the OSI Model. A, C, and D are incorrect because VTP does not function at those layers of the OSI Model.
A17: Answer: D. The primary function of VTP is messaging, to ensure VLAN configuration consistency and the management of additions, deletions, and name changes. C is incorrect. VTP does manage deletions; however, it is not the sole, primary function of VTP. A and B are incorrect because encryption and authentication are not features of VTP.
A18: Answer: A. A switch can be in only a single VTP domain. B, C, and D are incorrect, as a switch cannot belong to 64, 255, or an unlimited number of domains.
A19: Answers: A, B, and D. Server mode is one of three VTP modes of operation; Client mode is a VTP mode of operation that does not allow creation, modification, or deletion of VLANs; and although Transparent mode acts much like Server mode, it does not synchronize information. C, E, and F are incorrect because Peer, Static, and Dynamic are not VTP modes.
A20: Answer: A. Server mode is one of three VTP modes of operation, and is the default. B is incorrect, because although Client mode is a VTP mode of operation that doesn't allow the creation, modification, or deletion of VLANs, it is not the default. D is incorrect, because although Transparent mode acts much like Server mode, it does not synchronize information and is not the default. C, E, and F are not VTP modes.
A21: Answer: B. NVRAM is used to store VLAN configurations, not RAM or flash memory. D is incorrect; configurations are stored in NVRAM in case of a power failure.
A22: Answer: B. Client mode forwards advertisements and synchronizes information. It does not save information in NVRAM. A is incorrect, as Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. D is incorrect, as Transparent mode creates, modifies, and deletes VLANs, and it forwards advertisements and saves configurations in NVRAM, but it does not synchronize. C, E, and F are not VTP modes.
A23: Answers: A and D. Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. D is correct because Transparent mode creates, modifies, and deletes VLANs. B is incorrect; Client mode forwards advertisements and synchronizes information, but it does not save information in NVRAM. C, E, and F are not VTP modes.
A24: Answers: A, B, and D. Server mode is a VTP mode that creates, modifies, and deletes VLANs. It forwards advertisements it receives and synchronizes information. It saves configuration information in NVRAM. Client mode forwards advertisements and synchronizes information. It does not save information in NVRAM. Finally, Transparent mode creates, modifies, and deletes VLANs. C, E, and F are incorrect because they are not VTP modes.
A25: Answer: D. Transparent mode creates, modifies, and deletes VLANs. It forwards advertisements and saves configurations in NVRAM. It does not synchronize, however. A is incorrect because Server mode is a VTP mode that creates, modifies, and deletes VLANs, forwards advertisements it receives, synchronizes information, and saves configuration information in NVRAM. B is incorrect because Client mode forwards advertisements and synchronizes information but does not save information in NVRAM. C, E, and F are not VTP modes.
A26: Answer: C. VTP advertisements are flooded through the management domain every five minutes by default. Answers A, B, and D are not the default settings.
A27: Answer: C. VTP uses multicast to send advertisements in the management domain. A is incorrect because broadcasts are not used for the propagation of advertisements. B is incorrect because unicasts are not as efficient for sending advertisements as multicast. D is incorrect, as there is no such method in VTP.
A28: Answer: C. The delete VTP command resets the configuration revision number. A, B, and D are invalid commands.
A29: Answer: D. Conflicts are resolved through revision numbers, and the higher revision number is processed. A is incorrect because order of reception is not a controlling factor. B is incorrect; the last advertisement is processed only if it has a higher revision number. C is incorrect because time stamps are not used.
A30: Answer: D. VTP pruning is the process of reducing unnecessary flooded traffic. A is incorrect because flood detection is not a valid method. B and C are incorrect, as broadcast quenching and flood quenching are not valid processes.
A31: Answer: A. Server mode is one of three VTP modes of operation, and is the default. It supports VTP pruning. B is incorrect, as Client mode is a VTP mode of operation that does not allow the creation, modification, or deletion of VLANs, and it doesn't support pruning. D is incorrect, because although Transparent mode acts much like Server mode, it does not synchronize information, and it doesn't support pruning. C, E, and F are not VTP modes.
A32: Answer: D. There is no default VTP domain set. A is incorrect because VLAN1 is simply the management VLAN. B and C are invalid.
A33: Answer: C. VTP domains on a Catalyst 2950 are created in VLAN Configuration mode. A is incorrect, because even as Privileged EXEC mode is required, you must enter the VLAN database command to get to VLAN Configuration mode. B is incorrect because this is valid only for Catalyst 1900 switches, which are now end of life. D is incorrect because no configuration changes can be made in User EXEC mode.
A34: Answer: C. The correct syntax on a Catalyst 5000 switch is set trunk desirable. A is incorrect, as this is the improper syntax for this switch; however, it is correct for a Catalyst 1900 series switch. B is incorrect, as this command does not achieve the desired effect. D is incorrect, as this command results in an error.
A35: Answer: C. Trunk ports are defined in Interface Configuration mode. A is incorrect, because even though Privileged EXEC mode is required, you must then enter Interface Configuration mode. B is incorrect; from Global Configuration mode, you must enter Interface Configuration mode. D is incorrect because no configuration changes are made in User EXEC mode.
A36: Answer: C. The vtp pruning enable command enables pruning on the switch. A and D are incorrect, as these commands result in an error message. B is incorrect because this is an invalid IOS command.
A37: Answer: B. The correct syntax is vtp domain name—in this case, vtp domain cisco01. A and C are incorrect because they are invalid syntax. D is incorrect, as this command is invalid.
A38: Answer: C. The switchport mode trunk command sets the port as a trunk port for 802.1Q traffic. This command is used in Interface Configuration mode. A is incorrect because this command results in an error message. B and D are not valid IOS commands.
A39: Answers: A and C. Interswitch Link and IEEE 802.1q are protocols that help define VLAN traffic over a single link. B is incorrect because VTP is merely a management protocol that helps to propagate VLANs to switches that belong to the same domain. D is incorrect because 802.1d is the IEEE standard for Spanning-Tree Protocol.
A40: Answer: A. You are configuring a port interface, so Interface Configuration mode is required. B is incorrect because there is no such Interface Configuration mode. C is incorrect because this is an interface, not a global setting; thus, Global Configuration mode is not appropriate. D is incorrect because Line Configuration mode is not the correct mode.
A41: Answer: D. A switch must be in VTP Server mode to propagate VLAN information to other switches. A is incorrect, as VTP pruning doesn't stop VTP revisions from propagating; it merely stops broadcasts from going to switches that do not have ports belonging to the VLANs that have the broadcasts. B is incorrect, as the VTP version number doesn't affect the propagation of advertisements. C is incorrect, as clients are unable to create VLANs.
A42: Answer: D. The exact maximum number of VLANs supported is switch-dependent. A, B, and C are incorrect because they are fixed numbers and not switch-dependent.
A43: Answer: A. You go to the particular interface/port you want to assign to VLAN 5 and enter the command switchport access vlan (vlan#). B is incorrect because it is an invalid command. C is incorrect because this assigns a port to a VLAN on a 1900 series switch, not the 2950. D is incorrect because it is an invalid command.
A44: Answer: B. A VLAN is considered its own broadcast domain. It helps contain broadcasts in a networked environment. A is incorrect because a VLAN actually segments the network even more. C is incorrect because VLANs are separate subnets that allow for Access-Lists to be applied, providing greater security. D is incorrect because Quality of Service can harness the power of VLANs to increase its functionality.
A45: Answer: C. The show vtp status command displays the requested information. A is incorrect; this command is valid but does not show the requested information. B is incorrect, as this command is valid for a 1900 series switch. D is incorrect because show ports is an invalid command.
A46: Answer: A. The show spantree command displays the requested information most effectively. B is incorrect because this command is not valid. C and D are valid commands but do not show the requested information.
A47: Answer: B. The no vlan command followed by the VLAN ID is the proper syntax. A is incorrect because this is an invalid IOS command. C is incorrect, and this command results in an error. D is incorrect, as this is not the proper syntax for the requested task.
A48: Answer: A. VLAN Configuration mode is used on Catalyst 2950 switches. B is incorrect; this command is entered in Global Configuration mode on a 1900 series switch. C and D are incorrect, as they are not the proper configuration modes.
A49: Answer: A. The router can route between the different subnets for the VLANs. It also can run ISL or 802.1q. B is incorrect because a Layer 2 switch has no Layer 3 comprehension. C is incorrect because a Hub is merely a multiport repeater with no capabilities to pass traffic between subnets. D is incorrect because there is no such device.
A50: Answer: B. The show vlan brief command displays the required information. A, C, and D are incorrect, as these are invalid IOS commands.
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