CCNA与ccnp模拟试题与答案，供考生平时学习练习使用，有助于考试模拟，考试环境有中文界面汉化，不过真实考试时候都是英文界面，
Question:1
uses layer 3 switches in the Core of their network. Which method of Layer 3
switching uses a forwarding information base (FIB)
A. Topology-based switching
B. Demand-based switching
C. Route caching
D. Flow-based switching
E. None of the other alternatives apply
Answer: A
Question:2
You need to design the VLAN scheme for the network. Which two statements are
true about best practices in VLAN design (Select two)
A. Routing should occur at the access layer if voice VLANs are utilized. Otherwise, routing
should occur at the distribution layer.
B. Routing should always be performed at the distribution layer.
C. VLANs should be localized to a switch.
D. VLANs should be localized to a single switch unless voice VLANs are being utilized.
E. Routing should not be performed between VLANs located on separate switches.
Answer: B, C
Question:4
Under what circumstances should an administrator prefer local VLANs over end-to-end
VLANs
A. Eighty percent of traffic on the network is destined for Internet sites.
B. There are common sets of traffic filtering requirements for workgroups located in multiple
buildings.
C. Eighty percent of a workgroup’s traffic is to the workgroup’s own local server.
D. Users are grouped into VLANs independent of physical location.
E. None of the other alternatives apply
Answer: A
Question:5
What are some virtues of implementing end-to-end VLANs (Choose two)
A. End-to-end VLANs are easy to manage.
B. Users are grouped into VLANs independent of a physical location.
C. Each VLAN has a common set of security and resource requirements for all members.
D. Resources are restricted to a single location.
Answer: B, C
Question:6
Which of the following statements is true about the 80/20 rule (Select all that apply)
A. 20 percent of the traffic on a network segment should be local
B. no more than 20 percent of the network traffic should be able to move across a backbone.
C. no more than 80 percent of the network traffic should be able to move across a backbone.
D. 80 percent of the traffic on a network segment should be local
Answer: B, D
Question:12
The VLANs in switch PG1 are being modified. Which of the following are updated in PG1
every time a VLAN is modified (Select all that apply)
A. Configuration revision number
B. Configuration revision flag field
C. Configuration revision reset switch
D. Configuration revision database
E. None of the other alternatives apply.
Answer: A, D
Question:13
What is a characteristic of assigning a static VLAN membership
A. VMPS server lookup is required
B. Easy to configure
C. Easy of adds, moves, and changes
D. Based on MAC address of the connected device
Answer: B
Question:14
Static VLANs are being used on the network. What is true about static VLANs
A. Devices use DHCP to request their VLAN.
B. Attached devices are unaware of any VLANs.
C. Devices are assigned to VLANs based on their MAC addresses.
D. Devices are in the same VLAN regardless of which port they attach to.
Answer: B
Question:19
The switches have all been upgraded to use VTP version 2. What are two benefits
provided in VTP Version 2 that are not available in VTP Version 1 (Select two)
A. VTP version 2 supports Token Ring VLANs
B. VTP version 2 allows VLAN consistency checks
C. VTP version 2 allows active redundant links when used with spanning tree
D. VTP version 2 reduces the amount of configuration necessary
E. VTP version 2 saves VLAN configuration memory
Answer: A, B
Question:20
The network administrator needs to enable VTP pruning within the
network. What action should a network administrator take to enable VTP pruning on an entire
management domain
A. Enable VTP pruning on any switch in the management domain
B. Enable VTP pruning on any client switch in the domain
C. Enable VTP pruning on a VTP server in the management domain
D. Enable VTP pruning on every switch in the domain
E. None of the other alternatives apply
Answer: C
Question:21
VTP is configured on switch PG1. Which of the following features were added in VTP version
2 that were not previously supported in VTP version 1 (Select two)
A. Supports Token Ring VLANs.
B. Allows VLAN consistency checks.
C. Saves VLAN configuration memory.
D. Reduces the amount of configuration necessary.
E. Allows active redundant links when used with spanning tree.
Answer: A, B
Question:22
The switches are configured to use VTP. What’s true about the VLAN trunking
protocol (VTP) (Select two)
A. VTP messages will not be forwarded over nontrunk links.
B. VTP domain names need to be identical. However, case doesn’t matter.
C. A VTP enabled device which receives multiple advertisements will ignore advertisements
with higher configuration revision numbers.
D. A device in “transparent” VTP mode will not forward VTP messages.
E. VTP pruning allows switches to prune VLANs that do not have any active ports associated
with them.
Answer: A, D
Question:23
Switch PG1 and PG2 both belong to the VTP domain. What’s true about the
switch operation in VTP domains (Select all that apply)
A. A switch can only reside in one management domain
B. A switch is listening to VTP advertisements from their own domain only
C. A switch is listening to VTP advertisements from multi domains
D. A switch can reside in one or more domains
E. VTP is no longer supported on Catalyst switches
Answer: A, B
Question:24
VTP devices in a network track the VTP revision number. What is a VTP configuration
revision number
A. A number for identifying changes to the network switch.
B. A number for identifying changes to the network router.
C. A number for identifying changes to the network topology.
D. None of the other alternatives apply.
Answer: C
Question:25
Switch PG1 is configured to use the VLAN Trunking Protocol (VTP). What does PG1
advertise in its VTP domain
A. The VLAN ID of all known VLANs, the management domain name, and the total number of
trunk links on the switch.
B. The VLAN ID of all known VLANs, a 1-bit canonical format (CF1 Indicator), and the switch
configuration revision number.
C. The management domain name, the switch configuration revision number, the known
VLANs, and their specific parameters.
D. A 2-byte TPID with a fixed value of 0x8100 for the management domain number, the
switch configuration revision number, the known VLANs, and their specific parameters.
E. None of the other alternatives apply.
Answer: C
Question:26
VTP switches use advertisements to exchange information with each other. Which of the
following advertisement types are associated with VTP (Select all that apply)
A. Domain advertisements
B. Advertisement requests from clients
C. Subset advertisements
D. Summary advertisements
Answer: B, C, D
Question:27
Switch PG1 is part of the VTP domain. What’s true of VTP Pruning within this
domain (Select all that apply)
A. It does not prune traffic from VLANs that are pruning-ineligible
B. VLAN 1 is always pruning-eligible
C. it will prune traffic from VLANs that are pruning-ineligible
D. VLAN 2 is always pruning-ineligible
E. None of the other alternatives apply.
Answer: A
Question:28
What action should you execute if you wanted to enable VTP pruning on your entire
management domain
A. Enable VTP pruning on any client switch in the management domain.
B. Enable VTP pruning on any switch in the management domain.
C. Enable VTP pruning on every switch in the management domain.
D. Enable VTP pruning on a VTP server in the management domain.
E. Disable VTP pruning on a VTP server in the management domain.
Answer: D
Question:29
Switch PG1 is configured with VTP. Which two VTP modes will make PG1 capable of creating
and deleting VLANs on itself (Select two)
A. Client
B. Server
C. Transparent
D. Pass-through
E. No-negotiate
Answer: B, C
Question:30
When the Catalyst switch PG1 is enabled to use VTP, which information does it advertise on
its trunk ports (Select two)
A. VTP mode
B. STP root status
C. Negotiation status
D. Management domain
E. Configuration revision number
Answer: D, E
Question:31
Two switches are connected via a trunk link. In this network, the original frame is
encapsulated and an additional header is added before the frame is carried over a trunk link.
At the receiving end, the header is removed and the frame is forwarded to the assigned VLAN.
This describes which technology
A. DISL
B. ISL
C. DTP
D. IEEE
E. MPLS
F. None of the other alternatives apply
Answer: B
Question:32
The core switches use trunks to connect to each other. How does
trunking keep track of multiple VLANs
A. It tags the data frame with VLAN information and recalculates the CRC value
B. It encapsulates the data frame with a new header and frame check sequence
C. It modifies the port index of a data frame to indicate the VLAN
D. It adds a new header containing the VLAN ID to the data frame
E. None of the other alternatives apply
Answer: A
Question:33
The core switches are configured to use trunks. Which three statements
are correct with regard to the IEEE standard (Select three)
A. The IEEE frame format adds a 4 byte field to a Ethernet frame
B. The packet is encapsulated with a 26 byte header and a 4 byte FCS
C. The protocol uses point-to-multipoint connectivity
D. The protocol uses point-to-point connectivity
E. The IEEE frame uses multicast destination of 0x01-00-0c-00-00
F. The IEEE frame retains the original MAC destination address
Answer: A, D, F
一般复习一个月就行，背背题库，刷刷题很容易就能通过。