Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 351:

  Refer to exhibit:

  

  Which two destination addresses will be used by Host A to send data to Host C? (Choose two.)

  A. the IP address of Switch 1
  B. the MAC address of Switch 1
  C. the IP address of Host C
  D. the MAC address of Host C
  E. the IP address of the router's E0 interface
  F. the MAC address of the router's E0 interface
  C. the IP address of Host C
  F. the MAC address of the router's E0 interface

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  While transferring data through many different networks, the source and destination IP addresses are not changed. Only the source and destination MAC addresses are changed. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. When the router receives this data, it replaces the source MAC address with its own E1 interface's MAC address and replaces the destination MAC address with Host C's MAC address before sending to Host C.

• Question 352:

  Refer to the exhibit.

  

  What is the reason that the interface status is "administratively down, line protocol down"?

  A. There is no encapsulation type configured.
  B. There is a mismatch in encapsulation types.
  C. The interface is not receiving any keepalives.
  D. The interface has been configured with the shutdown command.
  E. The interface needs to be configured as a DTE device.
  F. The wrong type of cable is connected to the interface.
  D. The interface has been configured with the shutdown command.

  ---

  Interfaces can be enabled or disabled with shutdown/no shutdown command. If you interface is down, it will display administratively down status. You can bring up an interface having administratively down interface using no shutdown command.

• Question 353:

  What parameter can be different on ports within an EtherChannel?

  A. speed
  B. DTP negotiation settings
  C. trunk encapsulation
  D. duplex
  B. DTP negotiation settings

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  For an etherchannel to come up, the speed, duplex and the trunk encapsulation must be the same on each end.

• Question 354:

  Which three statements about IPv6 prefixes are true? (Choose three.)

  A. FF00:/8 is used for IPv6 multicast.
  B. FE80::/10 is used for link-local unicast.
  C. FC00::/7 is used in private networks.
  D. 2001::1/127 is used for loopback addresses.
  E. FE80::/8 is used for link-local unicast.
  F. FEC0::/10 is used for IPv6 broadcast.
  A. FF00:/8 is used for IPv6 multicast.
  B. FE80::/10 is used for link-local unicast.
  C. FC00::/7 is used in private networks.

• Question 355:

  What are the alert messages generated by SNMP agents called?

  A. TRAP
  B. INFORM
  C. GET
  D. SET
  A. TRAP
  B. INFORM

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  A TRAP is a SNMP message sent from one application to another (which is typically on a remote host). Their purpose is merely to notify the other application that something has happened, has been noticed, etc. The big problem with TRAPs is that they're unacknowledged so you don't actually know if the remote application received your oh-so-important message to it. SNMPv2 PDUs fixed this by introducing the notion of an INFORM, which is nothing more than an acknowledged TRAP.

• Question 356:

  Which type of address is the public IP address of a NAT device?

  A. outside global
  B. outside local
  C. inside global
  D. inside local
  E. outside public
  F. inside public
  C. inside global

• Question 357:

  Which protocol can cause overload on a CPU of a managed device?

  A. Netflow
  B. WCCP
  C. IP SLA
  D. SNMP
  D. SNMP

  ---

  Sometimes, messages like this might appear in the router console: %SNMP-3-CPUHOG: Processing [chars] of [chars]

  They mean that the SNMP agent on the device has taken too much time to process a request.

  You can determine the cause of high CPU use in a router by using the output of the show process cpu command.

  Note: A managed device is a part of the network that requires some form of monitoring and management (routers, switches, servers, workstations, printers...).

• Question 358:

  What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?

  A. defines the destination IP address that is used in all broadcast packets on DCLI 202
  B. defines the source IP address that is used in all broadcast packets on DCLI 202
  C. defines the DLCI on which packets from the 192.168.1.2 IP address are received
  D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
  D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address

  ---

  This command identifies the DLCI that should be used for all packets destined to the 192.168.1.2 address. In this case, DLCI 202 should be used.

• Question 359:

  A network engineer wants to allow a temporary entry for a remote user with a specific username and password so that the user can access the entire network over the Internet. Which ACL can be used?

  A. standard
  B. extended
  C. dynamic
  D. reflexive
  C. dynamic

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  We can use a dynamic access list to authenticate a remote user with a specific username and password. The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server. The configuration of dynamic ACL can be read here: http://www.cisco.com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524.shtml

• Question 360:

  Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?

  A. ping address
  B. tracert address
  C. traceroute address
  D. arp address
  A. ping address

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  ICMP pings are used to verify connectivity between two IP hosts. Traceroute is used to verify the router hop path traffic will take but in this case since the hosts are in the same LAN there will be no router hops involved.