Cisco 640-822 Online Practice Questions and Exam Preparation

Cisco 640-822 Online Questions & Answers

• Question 111:

  A network administrator has been assigned an IP address space of 192.168.1.0/24 for a network with three segments. The first segment needs to support 60 hosts. The second segment needs to support 45 hosts. The third segment needs to support 30 hosts. Which two statements describe this choice? (Choose two.)

  A. The assigned address will not provide enough IP address space for the required number of hosts.
  B. The assigned address represents private IP address space.
  C. User IP addresses must be translated to public IP addresses when accessing the Internet.
  D. User IP addresses must be translated to private IP addresses when communicating to hosts on other network segments.
  E. This assignment will compromises network security.
  B. The assigned address represents private IP address space.
  C. User IP addresses must be translated to public IP addresses when accessing the Internet.

• Question 112:

  What two things does a router do when it forwards a packet? (Choose two.)

  A. switches the packet to the appropriate outgoing interfaces
  B. computes the destination host address
  C. determines the next hop on the path
  D. updates the destination IP address
  E. forwards ARP requests
  A. switches the packet to the appropriate outgoing interfaces
  C. determines the next hop on the path

• Question 113:

  Drag the definition on the left to the correct term on the right. Not all definitions on the left will be used.

  Select and Place:

  

  

• Question 114:

  An administrator is working with the 192.168.4.0 network, which has been subnetted with a /26 mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two.)

  A. 192.168.4.61
  B. 192.168.4.63
  C. 192.168.4.67
  D. 192.168.4.125
  E. 192.168.4.128
  F. 192.168.4.132
  C. 192.168.4.67
  D. 192.168.4.125

• Question 115:

  What happens when computers on a private network attempt to connect to the Internet through a Cisco router running PAT?

  A. The router uses the same IP address but a different TCP source port number for each connection.
  B. An IP address is assigned based on the priority of the computer requesting the connection.
  C. The router selects an address from a pool of one-to-one address mappings held in the lookup table.
  D. The router assigns a unique IP address from a pool of legally registered addresses for the duration of the connection.
  A. The router uses the same IP address but a different TCP source port number for each connection.

• Question 116:

  An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up What does "line protocol is up" specifically indicate about the interface?

  A. The cable is attached properly.
  B. CDP has discovered the connected device.
  C. Keepalives are being received on the interface.
  D. A carrier detect signal has been received from the connected device.
  E. IP is correctly configured on the interface.
  C. Keepalives are being received on the interface.

• Question 117:

  Which two statements describe the operation of the CSMA/CD access method? (Choose two.)

  A. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
  B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
  C. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method.
  D. After a collision, the station that detected the collision has first priority to resend the lost data.
  E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
  F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data.
  B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
  E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.

• Question 118:

  Which two statements are true concerning wireless standards? (Choose two.)

  A. Three standards exist: 802.11a/b, 802.11g, and 802.11w.
  B. 802.11 divides the 2.4 GHz into 14 channels.
  C. 802.11b is superior to 802.11a due to support for data rates up to 54 Mb/s.
  D. 802.11b is intended to compensate for the half-duplex nature of wireless communications.
  E. 802.11g is not as widely accepted due to production costs.
  B. 802.11 divides the 2.4 GHz into 14 channels.
  D. 802.11b is intended to compensate for the half-duplex nature of wireless communications.

• Question 119:

  Refer to the exhibit.

  

  After configuring two interfaces on the HQ router, the network administrator notices an error message. What must be done to fix this error?

  A. The serial interface must be configured first.
  B. The serial interface must use the address 192.168.1.2.
  C. The subnet mask of the serial interface should be changed to 255.255.255.0.
  D. The subnet mask of the FastEthernet interface should be changed to 255.255.255.240.
  E. The address of the FastEthernet interface should be changed to 192.168.1.66.
  D. The subnet mask of the FastEthernet interface should be changed to 255.255.255.240.

• Question 120:

  Refer to the exhibit.

  

  A network technician has issued the show controllers s0/0 command to check the status of an interface. What can be determined from this output? (Choose two.)

  A. An external CSU/DSU is not in use.
  B. The s0/0 interface is shutdown.
  C. The command clockrate 64000 was issued on this interface.
  D. No clock rate is set.
  E. The interface has a DTE serial cable attached to it.
  F. The interface has an Ethernet cable attached.
  A. An external CSU/DSU is not in use.
  D. No clock rate is set.