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Cisco CCNA Practice Test


Question 1

You want to verify the configuration register entry of a Cisco 2500 series router. What command should you use on the router?

a.  show config-reg 

b.  show version  

c.  show register 

d.  show running-config 

e.  show bootflash 

f.  show flash

Question 2

Users on a network subnet experience slow connectivity when trying to access file servers located on another LAN segment. There are more than 200 users on the subnet. A Cisco 2500 router serves as the default gateway as well as the firewall for the subnet. You suspect the problem could be caused by excessive CPU utilization on the router.

What command will verify that this is the case?

a.  show cpu 

b.  show cpu utilization 

c.  show cpu processes 

d.  show hardware 

e.  show processes cpu

Question 3

Which four of the following must you know about configuring passwords on a Cisco router?

a.  It is possible to configure all line access passwords during setup configuration mode. 

b.  All passwords can be encrypted. 

c.  Each line access port can be assigned a password. 

d.  Local database can be used for password authentication. 

e.  External Radius or TACACS servers can be used for password authentication.  

f.  Only privileged configuration mode can be assigned a password.

Question 4

Which three of the following information is gathered by the Cisco Discovery Protocol?

a.  Hardware platform. 

b.  All addresses of each layer 3 protocol.  

c.  Only one address of each layer 3 protocol. 

d.  Routing table. 

e. Routing protocol .  

f.  Device ID.

Question 5

It was a Saturday morning. You had just been waked up by a pager call about a connectivity problem between a branch router and the head office router. Both routers are connected via a leased line. The link needs to be up 24-hour a day because it carries important financial transactions.

You began your troubleshooting by trying to connect to the branch router using telnet but failed. Fortunately, you managed to connect to a dial up modem attached to the branch router. You did a 'show interface' command on the router. The result is shown below:

Branch#show interface serial 0/0

Serial0/0 is down, line protocol is down

  Hardware is HD64570

  Internet address is 192.168.10.2/30

  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255

  Encapsulation HDLC, loopback not set, keepalive set (10 sec)

  Last input never, output 00:03:11, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0 (size/max(drops): Total output drops: 0

  Queuing strategy: weighted fair

  Output queue: 0/1000/64/0 (size/max active/threshold/drops)

  Conversations 0/2/256 (active/max active/max total)

  Reserved Conversations 0/0 (allocated/max allocated)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     11 packets output, 476 bytes, 0 underruns

     0 output errors, 0 collisions, 27 interface resets

     0 output buffer failures, 0 output buffers swapped out

     11 carrier transitions

     DCD=down DSR=down DTR=down RTS=down CTS=down

Based on the output of the 'show interface serial 0/0' command issued on the branch router, which OSI layer is most likely causing the problem?

 a.        Transport layer 

 b.       Session layer 

 c.       Data layer 

 d.       Physical layer 

 e.       Network layer

Question 6

Geoff is a network administrator of a small network consists of three Cisco 2600 routers interconnected by a frame relay cloud. One day, he wants to add a static route to one of the remote router. He connects to the router using telnet from his workstation. Which layer of the OSI protocol stack is Geoff using for this task?

 a. Application 

 b. Presentation 

 c. Session 

 d. Transport 

 e. Network 

 f. Data-link

Question 7

From the seven OSI layers, which layer is responsible for error recovery and reliability?

 a. Presentation 

 b. Session 

 c. Application 

 d. Transport 

 e. Network 

 f.  Data-link

Question 8

You are a network consultant for Super LAN Interconnect, Inc. (SLII). One of your clients has a flat Ethernet network with 500 end-users and server farms. The network performance is poor from time to time.

The client hires your company to do analysis and redesign the current network infrastructure to improve performance. You recommend to segment the flat network into multiple segments. What is the benefit of your solution to solve the problem?

 a.  It will increase the number of collision domains. 

 b. It will decrease the broadcast domains. 

 c. Less total cost of ownership (TCO). 

 d. More users can be allocated within a single broadcast domain. 

 e. Smaller collision domains without the need of layer 3 routing.

Question 9

To understand the operation of bridges is essential to understand the operation of switches. Which three of the following characterize the correct operation of bridges and switches?

 a. Bridges are inherently more robust and faster than switches. 

 b. Switches operate at data link layer while bridges operate at physical layer. 

 c. Both bridges and switches forward data link layer broadcasts. 

 d. Switches commonly have a higher port density compared to bridges. 

 e. Switches are mainly software based while bridges are hardware based. 

 f. Switches create collision domains while bridges define broadcast domains. 

 g. Both bridges and switches forward traffic based on layer 2 addresses

Question 10

Acme Provisioning, Inc., a local IT integration provider, has just completed redesigning its campus LAN with VLAN segmentation. You, as the company's network administrator, have been tasked to connect 10 Windows XP Professional workstations to the access-layer switches (Catalyst 2900XL switches).

You verify that correct IP address, subnet mask, default gateway, and DNS servers have been configured on all PCs. You have also checked that correct Category 5 cabling are used for the connection. However, some workstations are experiencing problems connecting to other workstations on the same switch.

Which of the following is most likely cause of the problem?

 a.        The access-layer switch does not propagate the host routing entries to the core layer switches.

 b.       The switch ports on which the workstations are connected to are configured with incorrect VLAN.

 c.       The workstations have been configured with invalid MAC addresses. 

 d.       Spanning-Tree Protocol (STP) has been disabled on those switch ports. 

 e.       The router that performs intra-VLAN routing does not have route entries for the workstations.

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