Cisco 200-125 Online Practice Questions and Exam Preparation

Cisco 200-125 Online Questions & Answers

• Question 871:

  Refer to the exhibit.

  

  All of the routers in the network are configured with the ip subnet-zero command. Which network addresses should be used for Link A and Network A? (Choose two.)

  A. Network A - 172.16.3.48/26
  B. Network A - 172.16.3.128/25
  C. Network A - 172.16.3.192/26
  D. Link A - 172.16.3.0/30
  E. Link A - 172.16.3.40/30
  F. Link A - 172.16.3.112/30
  B. Network A - 172.16.3.128/25
  D. Link A - 172.16.3.0/30

  ---

  Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used, 172.16.3.0/30 is valid. Also, a /25 is required for 120 hosts and again 172.16.3.128/25 is the best, valid option.

• Question 872:

  Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two.)

  A. SW1#show port-secure interface FastEthernet 0/12
  B. SW1#show switchport port-secure interface FastEthernet 0/12
  C. SW1#show running-config
  D. SW1#show port-security interface FastEthernet 0/12
  E. SW1#show switchport port-security interface FastEthernet 0/12
  C. SW1#show running-config
  D. SW1#show port-security interface FastEthernet 0/12

  ---

  We can verify whether port security has been configured by using the "show running- config" or "show port-security interface" for more detail. An example of the output of "show port-security interface" command is shown below:

  

• Question 873:

  When a router makes a routing decision for a packet that is received from one network and destined to another, which portion of the packet does if replace?

  A. Layer 2 frame header and trailer
  B. Layer 3 IP address
  C. Layer 5 session
  D. Layer 4 protocol
  A. Layer 2 frame header and trailer

  ---

  Router Switching Function (1.2.1.1)A primary function of a router is to forward packets toward their destination. This is accomplished by using a switching function, which is the process used by a router to accept a packet on one interface and

  forward it out of another interface. A key responsibility of the switching function is to encapsulate packets in the appropriate data link frame type for the outgoing data link.

  NOTE

  In this context, the term "switching" literally means moving packets from source to destination and should not be confused with the function of a Layer 2 switch. After the router has determined the exit interface using the path determination

  function, the router must encapsulate the packet into the data link frame of the outgoing interface. What does a router do with a packet received from one network and destined for another network? The router performs the following three

  major steps:

  Step 1. De-encapsulates the Layer 3 packet by removing the Layer 2 frame header and trailer.

  Step 2. Examines the destination IP address of the IP packet to find the best path in the routing table.

  Step 3. If the router finds a path to the destination, it encapsulates the Layer 3 packet into a new Layer 2 frame and forwards the frame out the exit interface.

• Question 874:

  Which file-system management command is used frequently when lOS backups, upgrades,and restores are performed?

  A. show dir
  B. show file
  C. delete
  D. copy
  D. copy

• Question 875:

  Which three commands must you enter to create a trunk that allows VLAN 20? (Choose three)

  A. Switch(config-if)#switchport mode dynamic auto
  B. Switch(config-if)#switchport mode trunk
  C. Switch(config-if)#switchport trunk allowed vlan 20
  D. Switch(config-if)#switchport mode dynamic desirable
  E. Switch(config-if)#switchport trunk encapsulation dotlq
  F. Switch(config-if)#switchport trunk native vlan 20
  B. Switch(config-if)#switchport mode trunk
  C. Switch(config-if)#switchport trunk allowed vlan 20
  E. Switch(config-if)#switchport trunk encapsulation dotlq

• Question 876:

  Refer to the exhibit.

  

  The two routers have had their startup configurations cleared and have been restarted. At a minimum, which option below must the administrator do to enable CDP to exchange information between R1 and R2?

  A. Configure the router with thecdp enablecommand.
  B. Configure IP addressing andno shutdowncommands on both the R1 and R2 fa0/1 interfaces.
  C. Configure IP addressing andno shutdowncommands on either of the R1 or R2 fa0/1 interfaces.
  D. Enterno shutdowncommands on the R1 and R2 fa0/1 interfaces.
  D. Enterno shutdowncommands on the R1 and R2 fa0/1 interfaces.

• Question 877:

  Refer to the exhibit.

  

  Which address range efficiently summarizes the routing table of the addresses for router Main?

  A. 172.16.0.0./21
  B. 172.16.0.0./20
  C. 172.16.0.0./16
  D. 172.16.0.0/18
  B. 172.16.0.0./20

  ---

  The 172.16.0.0./20 network is the best option as it includes all networks from 172.16.0.0 ?172.16.16.0 and does it more efficiently than the /16 and /18 subnets. The /21 subnet will not include all the other subnets in this one single summarized address.

• Question 878:

  

  R1# show running-config interface Loopback0 description ***Loopback*** ip address 192.168.1.1 255.255.255.255 ip ospf 1 area 0 ! interface Ethernet0/0 description **Connected to R1-LAN** ip address 10.10.110.1 255.255.255.0 ip ospf 1 area 0 ! interface Ethernet0/1 description **Connected to L2SW** ip address 10.10.230.1 255.255.255.0 ip ospf hello-interval 25 ip ospf 1 area 0 ! router ospf 1

  log-adjacency-changes

  

  R2# show running-config R2 ! interface Loopback0 description **Loopback** ip address 192.168.2.2 255.255.255.255

  ip ospf 2 area 0 ! interface Ethernet0/0 description **Connected to R2-LAN** ip address 10.10.120.1 255.255.255.0 ip ospf 2 area 0 ! interface Ethernet0/1 description **Connected to L2SW** ip address 10.10.230.2 255.255.255.0 ip ospf 2 area 0

  ! router ospf 2 log-adjacency-changes

  

  R3# show running-config R3 username R6 password CISCO36 ! interface Loopback0 description **Loopback** ip address 192.168.3.3 255.255.255.255 ip ospf 3 area 0 ! interface Ethernet0/0 description **Connected to L2SW** ip address 10.10.230.3 255.255.255.0 ip ospf 3 area 0 ! interface Serial1/0

  description **Connected to R4-Branch1 office** ip address 10.10.240.1 255.255.255.252 encapsulation ppp ip ospf 3 area 0 ! interface Serial1/1 description **Connected to R5-Branch2 office** ip address 10.10.240.5 255.255.255.252 encapsulation ppp ip ospf hello-interval 50 ip ospf 3 area 0 ! interface Serial1/2

  description **Connected to R6-Branch3 office** ip address 10.10.240.9 255.255.255.252 encapsulation ppp ip ospf 3 area 0 ppp authentication chap ! router ospf 3 router-id 192.168.3.3 !

  

  R4# show running-config R4 ! interface Loopback0 description **Loopback** ip address 192.168.4.4 255.255.255.255 ip ospf 4 area 2 ! interface Ethernet0/0 ip address 172.16.113.1 255.255.255.0 ip ospf 4 area 2 ! interface Serial1/0 description **Connected to R3-Main Branch office** ip address 10.10.240.2 255.255.255.252 encapsulation ppp ip ospf 4 area 2 !

  router ospf 4 log-adjacency-changes

  

  R5# show running-config R5 ! interface Loopback0 description **Loopback** ip address 192.168.5.5 255.255.255.255 ip ospf 5 area 0 ! interface Ethernet0/0 ip address 172.16.114.1 255.255.255.0 ip ospf 5 area 0 ! interface Serial1/0 description **Connected to R3-Main Branch office** ip address 10.10.240.6 255.255.255.252 encapsulation ppp ip ospf 5 area 0 !

  router ospf 5 log-adjacency-changes R6# show running-config R6 username R3 password CISCO36 ! interface Loopback0 description **Loopback** ip address 192.168.6.6 255.255.255.255 ip ospf 6 area 0 ! interface Ethernet0/0 ip address 172.16.115.1 255.255.255.0

  

  ip ospf 6 area 0 ! interface Serial1/0 description **Connected to R3-Main Branch office** ip address 10.10.240.10 255.255.255.252 encapsulation ppp ip ospf 6 area 0 ppp authentication chap ! router ospf 6 router-id 192.168.3.3 !

  

  An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

  A. There is an area ID mismatch.
  B. There is a PPP authentication issue; a password mismatch.
  C. There is an OSPF hello and dead interval mismatch.
  D. There is a missing network command in the OSPF process on R5.
  C. There is an OSPF hello and dead interval mismatch.

• Question 879:

  Which command do you enter to enable an interface to support PPPoE on a client?

  A. Dev1(config)# bba-group pppoe bba1
  B. Dev1(config-if)# pppoe-client dial-pool-number1
  C. Dev1(config-if)# pppoe enable group bba1
  D. Dev1(config-if)# pppoe enable
  D. Dev1(config-if)# pppoe enable

• Question 880:

  Which two pieces of information can you determine from the output of the show ntp status command? (Choose two.)

  A. whether the clock is synchronized
  B. the NTP version number of the peer
  C. the IP address of the peer to which the clock is synchronized
  D. whether the NTP peer is statically configured
  E. the configured NTP servers
  A. whether the clock is synchronized
  C. the IP address of the peer to which the clock is synchronized