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  • Question
  • How does a host on an Ethernet LAN know when to transmit after a collision has occurred?

    1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
    2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
    3. You can improve the CSMA/CD network by adding more hubs.
    4. After a collision, the station that detected the collision has first priority to resend the lost data.
    5. 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.


  • Options
  • A. 1 and 3
  • B. 2 and 4
  • C. 1,3 and 4
  • D. 2 and 5

  • Correct Answer
  • 2 and 5 

    Explanation
    Once transmitting stations on an Ethernet segment hear a collision, they send an extended jam signal to ensure that all stations recognize the collision. After the jamming is complete, each sender waits a predetermined amount of time, plus a random time. After both timers expire, they are free to transmit, but they must make sure the media is clear before transmitting and that they all have equal priority.

  • More questions

    • 1. What is the maximum distance with maximum data rate for 802.11g?

    • Options
    • A. About 65-75 feet
    • B. About 90-100 feet
    • C. About 150 feet
    • D. Over 200 feet
    • Discuss
    • 2. Which of the following commands will allow you to set your Telnet password on a Cisco router?

    • Options
    • A. line telnet 0 4
    • B. line aux 0 4
    • C. line vty 0 4
    • D. line con 0
    • Discuss
    • 3. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

    • Options
    • A. 255.255.255.192
    • B. 255.255.255.224
    • C. 255.255.255.240
    • D. 255.255.255.248
    • Discuss
    • 4. Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?

    • Options
    • A. frame-relay arp
    • B. frame-relay map
    • C. frame-relay interface-dci
    • D. frame-relay lmi-type
    • Discuss
    • 5. What VTP mode allows you to change VLAN information on the switch?

    • Options
    • A. Client
    • B. STP
    • C. Server
    • D. Transparent
    • Discuss
    • 6. The network address of 172.16.0.0/19 provides how many subnets and hosts?

    • Options
    • A. 7 subnets, 30 hosts each
    • B. 8 subnets, 8,190 hosts each
    • C. 8 subnets, 2,046 hosts each
    • D. 7 subnets, 2,046 hosts each
    • Discuss
    • 7. Which command will allow you to see real-time translations on your router?

    • Options
    • A. show ip nat translations
    • B. show ip nat statistics
    • C. debug ip nat
    • D. clear ip nat translations *
    • Discuss
    • 8. Which of the following is an IEEE standard for frame tagging?

    • Options
    • A. ISL
    • B. 802.3Z
    • C. 802.1Q
    • D. 802.3U
    • Discuss
    • 9. Which command will display all the EIGRP feasible successor routes known to a router?

    • Options
    • A. show ip routes *
    • B. show ip eigrp summary
    • C. show ip eigrp topology
    • D. show ip eigrp adjacencies
    • Discuss
    • 10. Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?

    • Options
    • A. PPP
    • B. PPPoA
    • C. PPPoE
    • D. Token Ring
    • Discuss


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