CCNA 1 Exploration v4.0 Chapter 9 Quiz Answers

1. Drag the Ethernet frame fields on the left and drop them onto their function on the right.

CCNA 1 Exploration v4.0 Chapter 9 Quiz Answers 1

2. What is a primary function of CSMA/CD in an Ethernet network?

  • assigns MAC addresses to hosts
  • defines the area in which collisions can occur
  • identifies the start and end of Ethernet frame
  • provides a method to determine when and how hosts access the Ethernet medium
  • creates the header in the Ethernet frame as data is encapsulated
  • maps an IP address to a MAC address

3. What technology is the IEEE 802.3ac standard specifically designed to accommodate?

  • Simple Network Management Protocol
  • Address Resolution Protocol
  • Virtual Local Area Network
  • Voice over IP
  • Internet Control message Protocol

4. What is the purpose of media access control?

  • It identifies which workstation has sent a frame.
  • It determines which Layer 3 protocol should handle a frame.
  • It identifies which Ethernet frame format to use on the network.
  • It determines which workstation on a shared medium LAN is allowed to transmit data.

5. How are collisions detected on an Ethernet network?

  • Stations identify the altered FCS field on the colliding packets.
  • The signal amplitude on the networking media is higher than normal.
  • Traffic on the network cannot be detected due to a blockage
  • The signal amplitude on the networking media is lower than normal.

6. Which Layer 2 sublayer provides services to the network layer of the OSI Model?

  • FCS
  • IEEE 802.3
  • LLC
  • MAC

7. Which devices shown in the graphic must have a MAC address?

CCNA 1 Exploration v4.0 Chapter 9 Quiz Answers 2

  • only PC
  • only router
  • PC and router
  • PC, hub, and router
  • PC, printer, and router

8. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

CCNA 1 Exploration v4.0 Chapter 9 Quiz Answers 3

  • Host B can transmit immediately since it is connected on its own cable segment.
  • Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
  • Host B must send a request signal to Host A by transmitting an interframe gap.
  • Host B must wait until it is certain that Host A has completed sending its frame.

9. Which of the following are fields in an 802.3 Ethernet frame? (Choose three.)

  • source physical address
  • source logical address
  • media type identifier
  • frame check sequence
  • destination physical address
  • destination logical address

10. What address type does a switch use to make selective forwarding decisions?

  • source IP
  • destination IP
  • source MAC
  • destination MAC
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