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  • Question
  • Which layer 4 protocol is used for a Telnet connection?


  • Options
  • A. IP
  • B. TCP
  • C. TCP/IP
  • D. UDP

  • Correct Answer
  • TCP 

    Explanation
    Although Telnet does use TCP and IP (TCP/IP), the question specifically asks about layer 4, and IP works at layer 3. Telnet uses TCP at layer 4.

  • More questions

    • 1. If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

    • Options
    • A. The lowest IP address of any physical interface
    • B. The highest IP address of any physical interface
    • C. The lowest IP address of any logical interface
    • D. The highest IP address of any logical interface
    • Discuss
    • 2. Which of the following protocols support VLSM, summarization, and discontiguous networking?

      1. RIPv1
      2. IGRP
      3. EIGRP
      4. OSPF
      5. BGP
      6. RIPv2

    • Options
    • A. 1 and 4
    • B. 2 and 5
    • C. 3, 4 and 6
    • D. All of the above
    • Discuss
    • 3. How many non-overlapping channels are available with 802.11h?

    • Options
    • A. 3
    • B. 12
    • C. 23
    • D. 40
    • Discuss
    • 4. What are the distinct functions of layer 2 switching that increase available bandwidth on the network?

      1. Address learning
      2. Routing
      3. Forwarding and filtering
      4. Creating network loops
      5. Loop avoidance
      6. IP addressing

    • Options
    • A. 1, 3 and 5
    • B. 2, 4 and 6
    • C. 2 and 6
    • D. 3 and 5
    • Discuss
    • 5. The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

    • Options
    • A. RAM should be erased and the router restarted.
    • B. Flash should be erased and the router restarted.
    • C. NVRAM should be erased and the router restarted.
    • D. The new configuration should be entered and saved.
    • Discuss
    • 6. You want to create a standard access list that denies the subnet of the following host: 172.16.198.94/19. Which of the following would you start your list with?

    • Options
    • A. access-list 10 deny 172.16.192.0 0.0.31.255
    • B. access-list 10 deny 172.16.0.0 0.0.255.255
    • C. access-list 10 deny 172.16.172.0 0.0.31.255
    • D. access-list 10 deny 172.16.188.0 0.0.15.255
    • Discuss
    • 7. 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
    • Discuss
    • 8. Which of the following is considered to be the address before translation?

    • Options
    • A. Inside local
    • B. Outside local
    • C. Inside global
    • D. Outside global
    • Discuss
    • 9. Which of the following is true regarding VLANs?

    • Options
    • A. You must have at least two VLANs defined in every Cisco switched network.
    • B. All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
    • C. You should not have more than 10 switches in the same VTP domain.
    • D. VTP is used to send VLAN information to switches in a configured VTP domain.
    • Discuss
    • 10. A switch has been configured for three different VLANs: VLAN2, VLAN3, and VLAN4. A router has been added to provide communication between the VLANs. What type of interface is necessary on the router if only one connection is to be made between the router and the switch?

    • Options
    • A. 10Mbps Ethernet
    • B. 56Kbps Serial
    • C. 100Mbps Ethernet
    • D. 1Gbps Ethernet
    • Discuss


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