Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 261:

  Refer to the exhibit.

  

  What set of commands was configured on interface Fa0/3 to produce the given output?

  A. interface FastEthernet 0/3 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk
  B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk
  C. interface FastEthernet 0/3 channel-group 2 mode active switchport trunk encapsulation dot1q switchport mode trunk
  D. interface FastEthernet 0/3 channel-group 2 mode on switchport trunk encapsulation dot1q switchport mode trunk
  B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk

  ---

  Based on the output shown, the configured channel group number was 2 and the mode used was passive, so only choice B is correct.

• Question 262:

  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 263:

  Refer to the exhibit.

  

  A new subnet with 60 hosts has been added to the network. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses?

  A. 192.168.1.56/26
  B. 192.168.1.56/27
  C. 192.168.1.64/26
  D. 192.168.1.64/27
  C. 192.168.1.64/26

  ---

  A subnet with 60 host is 2*2*2*2*2*2 = 64 -2 == 62 6 bits needed for hosts part. Therefore subnet bits are 2 bits (8-6) in fourth octet. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 ?192 = 64 0 -63 64 ?127

• Question 264:

  VLAN 3 is not yet configured on your switch. What happens if you set the switchport access vlan 3 command in interface configuration mode?

  A. The command is rejected.
  B. The port turns amber.
  C. The command is accepted and the respective VLAN is added to vlan.dat.
  D. The command is accepted and you must configure the VLAN manually.
  C. The command is accepted and the respective VLAN is added to vlan.dat.

  ---

  The "switchport access vlan 3" will put that interface as belonging to VLAN 3 while also updated the VLAN database automatically to include VLAN 3.

• Question 265:

  Refer to the exhibit.

  

  Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?

  A. 255.255.255.0
  B. 255.255.254.0
  C. 255.255.252.0
  D. 255.255.248.0
  B. 255.255.254.0

  ---

  310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.1111 1111.1111 1110.0000 0000 -> 255.255.254.0

• Question 266:

  Refer to the exhibit.

  

  What is the meaning of the output MTU 1500 bytes?

  A. The maximum number of bytes that can traverse this interface per second is 1500.
  B. The minimum segment size that can traverse this interface is 1500 bytes.
  C. The maximum segment size that can traverse this interface is 1500 bytes.
  D. The minimum packet size that can traverse this interface is 1500 bytes.
  E. The maximum packet size that can traverse this interface is 1500 bytes.
  F. The maximum frame size that can traverse this interface is 1500 bytes.
  E. The maximum packet size that can traverse this interface is 1500 bytes.

  ---

  The Maximum Transmission Unit (MTU) defines the maximum Layer 3 packet (in bytes) that can be transmitted out the interface.

• Question 267:

  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.

  

  

  

  Study the following output taken on R1:

  R1# Ping 10.5.5.55 source 10.1.1.1

  Type escape sequence to abort.

  Sending 5, 100-byte ICMP Echos to 10.5.5.55, timeout is 2 seconds:

  Packet sent with a source address of 10.1.1.1

  .......

  Success rate is 0 percent (0/5)

  Why are the pings failing?

  A. The network statement is missing on R5.
  B. The loopback interface is shut down on R5.
  C. The network statement is missing on R1.
  D. The IP address that is configured on the Lo1 interface on R5 is incorrect.
  C. The network statement is missing on R1.

  ---

  R5 does not have a route to the 10.1.1.1 network, which is the loopback0 IP address of R1. When looking at the EIGRP configuration on R1, we see that the 10.1.1.1 network statement is missing on R1.

  

• Question 268:

  Which command displays CPU utilization?

  A. show protocols
  B. show process
  C. show system
  D. show version
  B. show process

  ---

  The "show process" (in fact, the full command is "show processes") command gives us lots of information about each process but in fact it is not easy to read. Below shows the output of this command (some next pages are omitted).

  

  A more friendly way to check the CPU utilization is the command "show processes cpu history", in which the total CPU usage on the router over a period of time: one minute, one hour, and 72 hours are clearly shown:

  

  +

  The Y-axis of the graph is the CPU utilization.

  +

  The X-axis of the graph is the increment within the period displayed in the graph.

  For example, from the last graph (last 72 hours) we learn that the highest CPU utilization within 72 hours is 37% about six hours ago.

• Question 269:

  What OSPF command, when configured, will include all interfaces into area 0?

  A. network 0.0.0.0 255.255.255.255 area 0
  B. network 0.0.0.0 0.0.0.0 area 0
  C. network 255.255.255.255 0.0.0.0 area 0
  D. network all-interfaces area 0
  A. network 0.0.0.0 255.255.255.255 area 0

  ---

  Example 3-1 displays OSPF with a process ID of 1 and places all interfaces configured with an IP address in area 0. The network command network 0.0.0.0 255.255.255.255 area 0 dictates that you do not care (255.255.255.255) what the IP address is, but if an IP address is enabled on any interface, place it in area 0. Example 3-1 Configuring OSPF in a Single Area

  

  Reference: http://www.ciscopress.com/articles/article.asp?p=26919andseqNum=3

• Question 270:

  SIMULATION Central Florida Widgets recently installed a new router in their office. Complete the network installation by performing the initial router configurations and configuring R1PV2 routing using the router command line interface (CLI) on the RC. Configure the router per the following requirements: Name of the router is R2 Enable. secret password is cisco The password to access user EXEC mode using the console is cisco2 The password to allow telnet access to the router is cisco3 IPV4 addresses must be configured as follows: Ethernet network 209.165.201.0/27 - router has fourth assignable host address in subnet Serial network is 192.0.2.176/28 - router has last assignable host address in the subnet.

  Interfaces should be enabled.

  Router protocol is RIPV2

  Attention:

  In practical examinations, please note the following, the actual information will prevail.

  1.

  Name or the router is xxx

  2.

  Enable. secret password is xxx

  3.

  Password In access user EXEC mode using the console is xxx

  4.

  The password to allow telnet access to the router is xxx

  5.

  IP information

  

  Correct Answer. Check the answer below
  Check the answer below

  ---

  Router>enable Router#config terminal Router(config)#hostname R2 R2(config)#enable secret Cisco 1 R2(config)#line console 0 R2(config-line)#password Cisco 2 R2(config-line)#exit R2(config)#line vty 0 4 R2(config-line)#password Cisco 3 R2(config-line)#login R2(config-line)#exit R2(config)#interface faO/0 R2(config-if)#ip address 209.165.201.4 255.255.255.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192.0.2.190 255.255.255.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209.165.201.0 R2(config-router)#network 192.0.2.176 R2(config-router)#end R2#copy run start