Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 261:

  If a router has four interfaces and each interface is connected to four switches, how many broadcast domains are present on the router?

  A. 1
  B. 2
  C. 4
  D. 8
  C. 4

• Question 262:

  A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?

  A. Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# no shut
  B. Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation ppp Main(config-if)# no shut
  C. Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation frame-relay Main(config-if)# authentication chap Main(config-if)# no shut
  D. Main(config)# interface serial 0/0 Main(config-if)#ip address 172.16.1.1 255.255.255.252 Main(config-if)#encapsulation ietf Main(config-if)# no shut
  B. Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation ppp Main(config-if)# no shut

  ---

  With serial point to point links there are two options for the encapsulation. The default, HDLC, is Cisco proprietary and works only with other Cisco routers. The other option is PPP which is standards based and supported by all vendors.

• Question 263:

  Refer to the exhibit.

  

  A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. What is the problem?

  A. The link between Host1 and Switch1 is down.
  B. TCP/IP is not functioning on Host1
  C. The link between Router1 and Router2 is down.
  D. The default gateway on Host1 is incorrect.
  E. Interface Fa0/0 on Router1 is shutdown.
  F. The link between Switch1 and Router1 is down.
  C. The link between Router1 and Router2 is down.

  ---

  Host1 tries to communicate with Host2. The message destination host unreachable from Router1 indicates that the problem occurs when the data is forwarded from Host1 to Host2. According to the topology, we can infer that the link between Router1 and Router2 is down.

• Question 264:

  Refer to the exhibit.

  

  Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two.)

  A. Host E and host F use the same IP gateway address.
  B. Router1 and Switch2 should be connected via a crossover cable.
  C. Router1 will not play a role in communications between host A and host D.
  D. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces.
  E. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit.
  F. The FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type.
  D. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces.
  F. The FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type.

  ---

  In order for multiple VLANs to connect to a single physical interface on a Cisco router, subinterfaces must be used, one for each VLAN. This is known as the router on a stick configuration. Also, for any trunk to be formed, both ends of the trunk must agree on the encapsulation type, so each one must be configured for 802.1q or ISL.

• Question 265:

  Scenario

  Refer to the topology. Your company has connected the routers R1, R2, and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the routers R4 and R5.

  The EIGRP routing protocol is configured.

  You are required to troubleshoot and resolve the EIGRP issues between the various routers.

  Use the appropriate show commands to troubleshoot the issues.

  

  

  

  Which path does traffic take from R1 to R5?

  A. The traffic goes through R2.
  B. The traffic goes through R3.
  C. The traffic is equally load-balanced over R2 and R3.
  D. The traffic is unequally load-balanced over R2 and R3.
  A. The traffic goes through R2.

  ---

  Using the "show ip int brief command" on R5 we can see the IP addresses assigned to this router. Then, using the "show ip route" command on R1 we can see that to reach 10.5.5.5 and 10.5.5.55 the preferred path is via Serial 1/3, which we see from the diagram is the link to R2.

  

• Question 266:

  Which command can you enter to route all traffic that is destined for 192.168.0.0/20 to a specific interface?

  A. router(config)#ip route 192.168.0.0 255.255.240.0 GigabitEthernet0/1
  B. router(config)#ip route 0.0.0.0 255.255.255.0 GigabitEthernet0/1
  C. router(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1
  D. router(config)#ip route 192.168.0.0 255.255.255.0 GigabitEthernet0/1
  A. router(config)#ip route 192.168.0.0 255.255.240.0 GigabitEthernet0/1

• Question 267:

  You are working in a data center environment and are assigned the address range 10.188.31.0/23. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. Which IP address range meets these requirements?

  A. 10.188.31.0/26
  B. 10.188.31.0/25
  C. 10.188.31.0/28
  D. 10.188.31.0/27
  E. 10.188.31.0/29
  D. 10.188.31.0/27

  ---

  Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s -> /27. Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice.

• Question 268:

  Which parameter would you tune to affect the selection of a static route as a backup, when a dynamic protocol is also being used?

  A. hop count
  B. administrative distance
  C. link bandwidth
  D. link delay
  E. link cost
  B. administrative distance

  ---

  By default the administrative distance of a static route is 1, meaning it will be preferred over all dynamic routing protocols. If you want to have the dynamic routing protocol used and have the static route be used only as a backup, you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.

• Question 269:

  Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two.)

  A. reduces routing table entries
  B. auto-negotiation of media rates
  C. efficient utilization of MAC addresses
  D. dedicated communications between devices
  E. ease of management and troubleshooting
  A. reduces routing table entries
  E. ease of management and troubleshooting

  ---

  Here are some of the benefits of hierarchical addressing:

  Reduced number of routing table entries -- whether it is with your Internet routers or your internal routers, you should try to keep your routing tables as small as possible by using route summarization. Route summarization is a way of

  

  having a single IP address represent a collection of IP addresses; this is most easily accomplished when you employ a hierarchical addressing plan. By summarizing routes, you can keep your routing table entries (on the routers that receive the summarized routes) manageable, which offers the following benefits:

  -More efficient routing

  - A reduced number of CPU cycles when recalculating a routing table or sorting through the routing table entries to find a match

  -Reduced router memory requirements

  - Reduced bandwidth required to send the fewer, smaller routing updates

  -Faster convergence after a change in the network

  -Easier troubleshooting

  -Increased network stability

  Efficient allocation of addresses -- Hierarchical addressing lets you take advantage of all possible addresses because you group them contiguously.

  

  Reference: http://www.ciscopress.com/articles/article.asp?p=174107

• Question 270:

  Which protocol is the Cisco proprietary implementation of FHRP?

  A. HSRP
  B. VRRP
  C. GLBP
  D. CARP
  A. HSRP