CCNA Sample Questions

640-801

The Building Scalable Cisco Certification exam is a qualifying exam for the CCNA certifications. The exam will certify that the successful candidate has important knowledge and skills necessary to use advanced IP addressing and routing in implementing scalability for Cisco routers connected to LANs and WANs. The exam covers topics on Advanced IP Addressing, Routing Principles, Configuring the EIGRP, Configuring the Open Shortest Path First Protocol, Configuring IS-IS, Manipulating Routing Updates, and configuring basic BGP.

We provide CCNA sample questions that help test your preparedness for taking the actual cisco certification exam. CCNA 640-801 sample questions help in consolidating your concepts, preparation and also as exam cram. Each CCNA sample question is based on respective vendors published exam objectives and designed to help attain cisco certification.

1. Given the the following network diagram, assume that port 1 through 3 are assigned to VLAN 1 and ports 4 through 6 are assigned to VLAN 2 on each switch. The switches are interconnected over a trunked link.

   Which of the following conditions would verify VLAN and trunk operation? (choose 3)
   

   
   1. A. Host 1-1 can ping Host 1-2
   2. B. Host 1-1 can ping Host 4-2
   3. C. Host 1-1 can not ping Host 1-2
   4. D. Host 4-1 can not ping Host 1-2
   5. E. Host 4-1 can ping Host 4-2

   Answer :A, D, E

2. By looking at the configuration, Which additional command must be issued on the Branch router before interesting traffic will be sent to the Remote router?

   Hostname: Branch Hostname: Remote
   PH# 123-6000, 123-6001 PH# 123-8000, 123-8001
   SPID1: 32055512360001 SPID1: 32055512380001
   SPID2: 32055512360002 SPID2: 32055512380002

   isdn switch-type basic ni
   username Remote password cisco
   interface bri0
   ip address 10.1.1.1 255.255.255.0
   encapsulation ppp
   ppp authentication chap
   isdn spid1 41055512360001
   isdn spid2 41055512360002
   dialer map ip 10.1.1.2 name Remote 1238001
   dialer-list 1 protocol ip permit

   1. (config-if)# dialer-group 1
   2. (config-if)# dialer-list 1
   3. (config-if)# dialer map 1
   4. (config-if)# dialer-route 1

   Answer : A

   Explanation :The "dialer-group #" command tells the access-list (used with the dialer-list # command), which interface to activate when it finds interesting traffic. The numbers at end of each command must match.

3. You are the network administrator of the RouterSim global software Company. You receive a call from a user who is unable to reach a server at a remote site. After further review you discover the following info:

   Local PC 190.0.3.35/24
   Default Gateway 190.0.3.1
   Remote Server 190.0.5.250/24

   You then conduct the following tests from the offending local PC: Ping 127.0.0.1 - Unsuccessful
   Ping 190.0.3.35 - Successful
   Ping 190.0.3.1 - Unsuccessful
   Ping 190.0.5.250 - Unsuccessful

   Which of the following problems would create the test results listed above?

   1. TCP/IP not correctly installed
   2. Local physical layer problem
   3. NIC not functioning
   4. Remote physical layer problem

   Answer : A

   Explanation :If you cannot ping the loopback address of 127.0.0.1, then something is wrong with the IP configuration of the host.

4. Choose three reasons why the networking industry uses a layered model. (Choose 3)
   1. Allow changes in one layer to occur without changing other layers
   2. To get Gigabit speeds on LANs
   3. Clarify what general functions is to be done rather than how to do it
   4. To create filter tables on LANs
   5. Order network troubleshooting steps

   Answer :A, C, E

   Explanation :
   The reasons to use a layer model are:

   1. Clarify what general function is to be done rather than how to do it.
   2. Reduce the complexity of networking into more manageable sublayers.
   3. Enable interoperability using standard interfaces.
   4. Allow changes in one layer to occur without changing other layers.
   5. Speed up network industry progress by allowing specialization.
   6. Allow for shortcut explanations to facilitate protocol comparisons.
   7. Order network troubleshooting steps.
   8. Facilitate systematic troubleshooting.
5. What is a disadvantage to using bridges in your network?
   1. Filters by MAC address
   2. Stops broadcast storms
   3. Doesn't stop broadcast storms
   4. Can only use up to 4 bridges in any LAN

   Answer : C

   Explanation :
   Even though the 5-4-3 rule specifies you can only have 4 bridges in a network, that is not really a disadvantage. The disadvantage to bridging is that it filters by MAC address and cannot create separate networks like a router can. This means that if a broadcast storm was to take place a bridge will forward the frames.

6. Two routers Rtr1 and Rtr2 are both configured with RIP only. What will be the result when Rtr1 receives a routing update that contains a higher cost path to a network already in its routing table?
   1. The update information will replace the existing routing table entry.
   2. The update information will be added to the existing routing table.
   3. The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
   4. The update will be ignored and no further action will be taken.

   Answer :E

7. What switching method examines the destination MAC address as the frame is being received and then begins forwarding the frame prior to receiving the entire frame?
   1. Modified Cut Through
   2. Store and Forward
   3. Cut Through
   4. Fragment Free

   Answer :C