Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 181:

  Refer to the exhibit.

  

  Hosts in network 192.168.2.0 are unable to reach hosts in network 192.168.3.0. Based on the output from RouterA, what are two possible reasons for the failure? (Choose two.)

  A. The cable that is connected to S0/0 on RouterA is faulty.
  B. Interface S0/0 on RouterB is administratively down.
  C. Interface S0/0 on RouterA is configured with an incorrect subnet mask.
  D. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.
  E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
  F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.
  E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
  F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.

  ---

  From the output we can see that there is a problem with the Serial 0/0 interface. It is enabled, but the line protocol is down. There could be a result of mismatched encapsulation or the interface not receiving a clock signal from the CSU/DSU.

• Question 182:

  Which NAT function can map multiple inside addresses to a single outside address?

  A. PAT
  B. SFTP
  C. RARP
  D. ARP
  E. TFTP
  A. PAT

• Question 183:

  Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two.)

  A. RAM
  B. NVRAM
  C. flash memory
  D. HTTP server
  E. TFTP server
  F. Telnet server
  C. flash memory
  E. TFTP server

  ---

  The following locations can be configured as a source for the IOS image:

  1.

  + Flash (the default location)

  2.

  + TFTP server

  3.

  + ROM (used if no other source is found)

• Question 184:

  Which two statements about static NAT translations are true? (Choose two.)

  A. They allow connections to be initiated from the outside.
  B. They require no inside or outside interface markings because addresses are statically defined.
  C. They are always present in the NAT table.
  D. They can be configured with access lists, to allow two or more connections to be initiated from the outside.
  A. They allow connections to be initiated from the outside.
  C. They are always present in the NAT table.

  ---

  Static NAT is to map a single outside IP address to a single inside IP address. This is typically done to allow incoming connections from the outside (Internet) to the inside. Since these are static, they are always present in the NAT table even if they are not actively in use.

• Question 185:

  Which statement about VLAN operation on Cisco Catalyst switches is true?

  A. When a packet is received from an 802.1Q trunk, the VLAN ID can be determined from the source MAC address and the MAC address table.
  B. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.
  C. Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN.
  D. Ports between switches should be configured in access mode so that VLANs can span across the ports.
  B. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.

  ---

  Each VLAN resides in its own broadcast domain, so incoming frames with unknown destinations are only transmitted to ports that reside in the same VLAN as the incoming frame.

• Question 186:

  Which two commands can you enter to verify that a configured NetFlow data export is operational? (Choose two.)

  A. show ip flow export
  B. show ip cache flow
  C. ip flow ingress
  D. ip flow egress
  E. interface ethernet 0/0
  F. ip flow-export destination
  A. show ip flow export
  B. show ip cache flow

• Question 187:

  What will happen if a private IP address is assigned to a public interface connected to an ISP?

  A. Addresses in a private range will not be routed on the Internet backbone.
  B. Only the ISP router will have the capability to access the public network.
  C. The NAT process will be used to translate this address to a valid IP address.
  D. A conflict of IP addresses happens, because other public routers can use the same range.
  A. Addresses in a private range will not be routed on the Internet backbone.

  ---

  Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only, and cannot be used globally for Internet use.

• Question 188:

  A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?

  A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.
  B. Add a second router to handle the VLAN traffic.
  C. Add two more Fast Ethernet interfaces.
  D. Implement a router-on-a-stick configuration.
  D. Implement a router-on-a-stick configuration.

  ---

  A router on a stick allows you to use sub-interfaces to create multiple logical networks on a single physical interface.

• Question 189:

  A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?

  A. the port-channel 1 interface
  B. the highest number member interface
  C. all member interfaces
  D. the lowest number member interface
  A. the port-channel 1 interface

  ---

  To create an EtherChannel interface and assign its IP address and subnet mask, use the following steps beginning in global configuration mode:

  

  The IP address is assigned to the port channel interface, not the underlying physical member interfaces.

  Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/12-0_7_w5_15d/configuration/guide/config/ether_ch.html

• Question 190:

  Which protocol advertises a virtual IP address to facilitate transparent failover of a Cisco routing device?

  A. FHRP
  B. DHCP
  C. RSMLT
  D. ESRP
  A. FHRP