Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 231:

  A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. What command will display the required information?

  A. Router# show ip eigrp adjacency
  B. Router# show ip eigrp topology
  C. Router# show ip eigrp interfaces
  D. Router# show ip eigrp neighbors
  D. Router# show ip eigrp neighbors

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  Below is an example of the show ip eigrp neighbors command. The retransmit interval (Smooth Round Trip Timer ?SRTT) and the queue counts (Q count, which shows the number of queued EIGRP packets) for the adjacent routers are listed:

  

• Question 232:

  What are two reasons that duplex mismatches can be difficult to diagnose? (Choose two.)

  A. The interface displays a connected (up/up) state even when the duplex settings are mismatched.
  B. The symptoms of a duplex mismatch may be intermittent.
  C. Autonegotiation is disabled.
  D. Full-duplex interfaces use CSMA/CD logic, so mismatches may be disguised by collisions.
  E. 1-Gbps interfaces are full-duplex by default.
  A. The interface displays a connected (up/up) state even when the duplex settings are mismatched.
  B. The symptoms of a duplex mismatch may be intermittent.

• Question 233:

  Refer to the exhibit.

  

  What is the most efficient summarization that R1 can use to advertise its networks to R2?

  A. 172.1.0.0/22
  B. 172.1.0.0/21
  C. 172.1.4.0/22
  D. 172.1.4.0/24 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24
  E. 172.1.4.0/25 172.1.4.128/25 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24
  C. 172.1.4.0/22

  ---

  The 172.1.4.0/22 subnet encompasses all routes from the IP range 172.1.4.0 ?172.1.7.255.

• Question 234:

  What is the effect of the overload keyword in a static NAT translation configuration?

  A. It enables port address translation.
  B. It enables the use of a secondary pool of IP addresses when the first pool is depleted.
  C. It enables the inside interface to receive traffic.
  D. It enables the outside interface to forward traffic.
  A. It enables port address translation.

• Question 235:

  What is the first step in the NAT configuration process?

  A. Define inside and outside interfaces.
  B. Define public and private IP addresses.
  C. Define IP address pools.
  D. Define global and local interfaces.
  A. Define inside and outside interfaces.

• Question 236:

  An administrator must assign static IP addresses to the servers in a network. For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP properties box for the sales server?

  A. IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.9
  B. IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.20.1
  C. IP address: 192.168.20.30 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.25
  D. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.17
  E. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.25
  C. IP address: 192.168.20.30 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.25

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  For the 192.168.20.24/29 network, the usable hosts are 192.168.24.25 (router) ?192.168.24.30 (used for the sales server).

• Question 237:

  Which feature builds a FIB and an adjacency table to expedite packet forwarding?

  A. Cisco Express Forwarding
  B. process switching
  C. fast switching
  D. cut-through
  A. Cisco Express Forwarding

• Question 238:

  Which two of these are characteristics of the 802.1Q protocol? (Choose two.)

  A. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes.
  B. It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.
  C. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.
  D. It includes an 8-bit field which specifies the priority of a frame.
  E. It is a trunking protocol capable of carrying untagged frames.
  B. It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.
  E. It is a trunking protocol capable of carrying untagged frames.

  ---

  802.1Q protocol, or Virtual Bridged Local Area Networks protocol, mainly stipulates the realization of the VLAN. 802.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. 802.1Q frame relay supports two types of frame: marked and non-marked. Non-marked frame carries no VLAN identification information.

• Question 239:

  After you configure the Loopback0 interface, which command can you enter to verify the status of the interface and determine whether fast switching is enabled?

  A. Router#show ip interface loopback 0
  B. Router#show run
  C. Router#show interface loopback 0
  D. Router#show ip interface brief
  A. Router#show ip interface loopback 0

• Question 240:

  Which command enables RSTP on a switch?

  A. spanning-tree uplinkfast
  B. spanning-tree mode rapid-pvst
  C. spanning-tree backbonefast
  D. spanning-tree mode mst
  B. spanning-tree mode rapid-pvst

  ---

  Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802.1D protocol. The RSTP 802.1w protocol is an IEEE open implementation. Cisco has its own proprietary implementation of RSTP, that includes the benefits of

  its Per-VLAN spanning tree protocols, called Rapid-PVST+.

  To activate the Rapid-PVST+ protocol:

  switch(config)#spanning-tree mode rapid-pvst