CCNA 1 Chapter 3

21 Questions  I  By Nysokheng
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 CCNA 1 chapter 3
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  • 1. 
    Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium? 
    • A. 

      Flow control

    • B. 

      Encapsulation

    • C. 

      Encoding

    • D. 

      Multi-casting

    • E. 

      Access method


  • 2. 
    Which two statements concerning networking standards are true? (Choose two.) 
    • A. 

      Adds complexity to networks

    • B. 

      Encourages vendors to create proprietary protocols

    • C. 

      Provides consistent interconnections across networks

    • D. 

      Ensures that communications work best in a single-vendor environment

    • E. 

      Simplifies new product development


  • 3. 
    What does the 100 mean when referencing the 100BASE-T Ethernet standard? 
    • A. 

      Type of cable used

    • B. 

      Type of data transmission

    • C. 

      Speed of transmission

    • D. 

      Type of connector required

    • E. 

      Maximum length of cable allowed


  • 4. 
    Which address does an NIC use when deciding whether to accept a frame? 
    • A. 

      Source IP address

    • B. 

      Source MAC address

    • C. 

      Destination IP address

    • D. 

      Destination MAC address

    • E. 

      Source Ethernet address


  • 5. 
    Which type of address is used in an Ethernet frame header? 
    • A. 

      Logical addresses only

    • B. 

      IP addresses only

    • C. 

      MAC addresses only

    • D. 

      Broadcast addresses only


  • 6. 
    What is the function of the FCS field in an Ethernet frame? 
    • A. 

      Detects transmission errors

    • B. 

      provides timing for transmission

    • C. 

      Contains the start of frame delimiter

    • D. 

      Indicates which protocol will receive the frame


  • 7. 
    What is the purpose of logical addresses in an IP network?
    • A. 

      They identify a specific NIC on a host device.

    • B. 

      They are used to determine which host device accepts the frame.

    • C. 

      They provide vendor-specific information about the host.

    • D. 

      They are used to determine the network that the host is located on.

    • E. 

      They are used by switches to make forwarding decisions.


  • 8. 
    Which device accepts a message on one port and always forwards the message to all other ports? 
    • A. 

      modem

    • B. 

      switch

    • C. 

      router

    • D. 

      hub


  • 9. 
    Which two networking devices are used to connect hosts to the access layer? (Choose two)
    • A. 

      Router

    • B. 

      Hub

    • C. 

      Switch

    • D. 

      Server

    • E. 

      Computer


  • 10. 
    Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario? 
    • A. 

      ARP

    • B. 

      DHCP

    • C. 

      DNS

    • D. 

      WINS


  • 11. 
    A switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform? 
    • A. 

      It drops the frame.

    • B. 

      It sends out an ARP request looking for the MAC address.

    • C. 

      It floods the frame out of all active ports, except the origination port.

    • D. 

      It returns the frame to the sender.


  • 12. 
    What is a benefit of having a router within the distribution layer? 
    • A. 

      Prevents collisions on a local network

    • B. 

      keeps broadcasts contained within a local network

    • C. 

      Controls which hosts have access to the network

    • D. 

      Controls host-to-host traffic within a single local network


  • 13. 

    Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2? 
    • A. 

      It sends the data packet as it was received.

    • B. 

      It reassembles the frame with different MAC addresses than the original frame.

    • C. 

      It reassembles the data packet with different IP addresses than the original data packet.

    • D. 

      It reassembles both the packet and the frame with different destination IP and MAC addresses.


  • 14. 
    Which table does a router use to make decisions on where a data packet is to be sent? 
    • A. 

      ARP table

    • B. 

      Routing table

    • C. 

      Network table

    • D. 

      Forwarding table


  • 15. 
    If the default gateway is configured incorrectly on the host, what is the impact on communications? 
    • A. 

      The host is unable to communicate on the local network.

    • B. 

      The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

    • C. 

      The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

    • D. 

      There is no impact on communications.


  • 16. 
    What device is typically used as the default gateway for a computer? 
    • A. 

      A server hosted by the ISP

    • B. 

      The router interface closest to the computer

    • C. 

      A server managed by a central IT department

    • D. 

      The switch interface that connects to the computer


  • 17. 
    If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it? 
    • A. 

      Dynamic route

    • B. 

      Default route

    • C. 

      Destination route

    • D. 

      Default destination


  • 18. 
    Which two items are included in a network logical map? (Choose two.) 
    • A. 

      Naming scheme

    • B. 

      IP addressing scheme

    • C. 

      Length of cable runs

    • D. 

      Physical location of networking devices

    • E. 

      Specific layout of interconnections between networking devices and hosts


  • 19. 
    An integrated router can normally perform the functions of which two other network devices? (Choose two
    • A. 

      NIC

    • B. 

      Switch

    • C. 

      E-mail server

    • D. 

      Application server

    • E. 

      Wireless access point


  • 20. 
    What is a reason for disabling simple file sharing? 
    • A. 

      It enables the user to map a remote resource with a local drive.

    • B. 

      It enables the user to share all files with all users and groups.

    • C. 

      It enables the user to share printers.

    • D. 

      It enables the user to set more specific security access levels.


  • 21. 

    Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true?
    • A. 

      H1 sends a unicast message to H2, but the hub forwards it to all devices.

    • B. 

      H1 sends a unicast message to H2, and the hub forwards it directly to H2.

    • C. 

      H1 sends a broadcast message to H2, and the hub forwards it to all devices.

    • D. 

      H1 sends a multicast message to H2, and the hub forwards it directly to H2.


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