Chapter 6 and Chapter 7: The Data Link Layer and Ethernet Switching

Which media access control method is used in legacy Ethernet LANs?

Carrier Sense Multiple Access/Collision Annoyance Carrier Sense Multiple Access/Collision Avoidance Carrier Sense Multiple Access/Collision Destruction A. Carrier Sense Multiple Access/Collision Detect

Match each Ethernet frame attribute with the appropriate frame field. There is only one match per attribute. Assists a host in determining if the frame received is addressed to it.

Destination Address

The data link layer does all of the following EXCEPT:

Enables upper layers to access the media. Accepts data, usually Layer 3 packets (that is, IPv4 or IPv6 packets), and encapsulates them into Layer 2 frames. Performs error detection and rejects any corrupt frame. A. Will acknowledge receipt of a frame from the original sender

The media access control (MAC) sublayer communicates between the networking software at the upper layers and the device hardware at the lower layers.

False

The data link layer adds a header and sequence numbers to a Layer 3 packet to create a frame.

False The data link layer adds a header and trailer (FCS) to a layer 3 packet to create a frame.

Match each Ethernet frame attribute with the appropriate frame field. There is only one match per attribute. Detects errors in an Ethernet frame.

Frame Check Sequence

What is another name for the OSI data link layer?

Layer 1 A. Layer 2 Layer 3 Layer 6

Refer to the following frame-forwarding scenario. Indicate which of the following statements are true when the switch forwards the frame: The frame is a broadcast frame and will be forwarded to all ports.

No

Refer to the following frame-forwarding scenario. Indicate which of the following statements are true when the switch forwards the frame: The frame is a unicast frame and will be sent to a specific port only.

No

Refer to the following frame-forwarding scenario. Indicate which of the following statements are true when the switch forwards the frame: The frame is a unicast frame, but it will be dropped by the switch.

No

Refer to the following frame-forwarding scenario. Indicate which of the following statements are true when the switch forwards the frame: The switch adds the source MAC address to the MAC table.

No

Match each Ethernet frame attribute with the appropriate frame field. There is only one match per attribute. The frame's originating NIC or interface MAC address.

Source Address

A unicast MAC address is a unique address used when a frame is sent from a single transmitting device to a single destination device.

True

Match each Ethernet frame attribute with the appropriate frame field. There is only one match per attribute. Describes which higher-level protocol has been used.

Type

Refer to the following frame-forwarding scenario. Indicate which of the following statements are true when the switch forwards the frame: The frame is a unicast frame and will be flooded out all active ports Yes except for the port it was received on.

Yes

Which topology displays networking device layer IP addresses?

aerial topology IP address topology A. logical topology physical topology

What feature automatically negotiates the best speed and duplex settings between interconnecting devices?

auto-MDIX autobots A. auto-negotiation autotune

Which duplex communication method is used in WLANs?

half-duplex