CCNA1-Module 8


1 What is the function of a Layer 2 switch?

  • forwards data based on logical addressing
  • duplicates the electrical signal of each frame to every port
  • learns the port assigned to a host by examining the destination MAC address
  • determines which interface is used to forward a frame based on the destination MAC address*


2 A network administrator has a multi-floor LAN to monitor and maintain. Through careful monitoring, the administrator has noticed a large amount of broadcast traffic slowing the network. Which device would you use to best solve this problem?

  • bridge
  • hub
  • Router*
  • transceiver


3 Which networking device reduces the size of both collision domains and broadcast domains?
hub

  • Layer 2 switch
  • Router*
  • bridge
  • Repeater


4 Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.)

  • Switch
  • Repeater*
  • router
  • bridge
  • Hub*


5 Refer to the exhibit. Forty-eight workstations are connected to a hub. The users are able to connect to the network, but access is very slow. An entry-level technician replaces the 10 Mbps hub with 100 Mbps hub but the problem still exists. What is the most economical way to correct the problem?

  • Replace the hub with a switch.*
  • Replace the hub with a router.
  • Replace the hub with a 1 Gbps hub.
  • Replace the hub with a 10 Mbps fiber hub.


6 What is used to prevent Layer 2 switching loops?

  • bridging
  • segmentation
  • Address Resolution Protocol
  • Spanning-Tree Protocol*


7 Two newly hired technicians are discussing the implementation of a new LAN. One technician proposes installing a hub. The other technician advises installing a switch. Which statements are true about the differences between a hub and a switch? (Choose two.)

  • A hub operates at Layer 2 of the OSI model.
  • A hub reduces the number of collisions on a LAN.
  • A hub works at a higher OSI model layer than a switch.
  • A switch provides more throughput to hosts on a LAN.*
  • A switch provides a collision-free environment on a LAN.*
  • The number of collisions on a LAN are the same whether a hub or a switch is used.


8 Which networking devices use the MAC address to make forwarding decisions? (Choose two.)

  • NIC
  • Bridge*
  • hub
  • Switch*
  • repeater


9 An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate?

  • hub
  • router
  • Switch*
  • repeater


10 Which devices will create multiple collision domains in an Ethernet network? (Choose two.)

  • NIC
  • hub
  • Switch*
  • Router*
  • repeater


11 What will a bridge do if it receives a frame with a MAC address that is not within the table?

  • discard frame
  • ignore frame
  • send frame to appropriate port
  • send frame to all ports except source port*


12 Refer to the exhibit. How many broadcast domains exist in classroom 240?

  1. 1*
  2. 2
  3. 5
  4. 12
  5. 13
  6. 15


13 Exhibited is a portion of ABC Company internetwork. Which of the connections can be full duplex?

  • segments 1 and 2
  • segment 2
  • segments 3 and 4
  • segments 2, 3, and 4*
  • segments 1, 2, 3, and 4


14 Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will receive the data when workstation A sends a unicast packet to workstation C?

  • workstation C+
  • workstations B and C
  • workstations B, C, and the E0 interface of the router*
  • workstations B, C, D, E, F, and the E0 interface of the router


15 A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC?

  • The frame is a runt frame.
  • The destination MAC address of the frame is FFFF.FFFF.FFFF.*
  • The transmitting host generated a jam signal during the frame transmission.
  • The recalculated checksum for the frame does not match the FCS on the frame.



Di Posting pada 11:32:10 31-09-2009
Label CCNA
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