Chapter 5 Cisco Ethernet

Refer to the exhibit. What is the destination MAC address of the Ethernet frame as it leaves the web server if the final destination is PC1?

00-60-2F-3A-07-CC

The binary number 0000 1010 can be expressed as ____ in hexadecimal.

0A

What is the decimal equivalent of the hexadecimal value of 3F?

63

The minimum Ethernet frame size is ____ bytes. Anything smaller than that should be considered a "runt frame."

64

Media Access Control

Media access control is responsible for the placement of frames on the media and the removal of frames from the media.

Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

RT1 will send an ARP reply with its own Fa0/0 MAC address.

Addressing

The encapsulation process contains the Layer 3 PDU and also provides for data link layer addressing.

What type of address is 01-00-5E-0A-00-02?

an address that reaches a specific group of hosts

What is the primary purpose of ARP?

resolve IPv4 addresses to MAC addresses

Fill in the blank. On Ethernet networks, the hexadecimal address FF-FF-FF-FF-FF-FF represents the ________MAC address.

Broadcast

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?

CRC in the trailer

Error Detection

Each frame contains a trailer used to detect any errors in transmissions.

Refer to the graphic. H2 has sent a broadcast message to all of the hosts. If host H1 wants to reply to the broadcast message, which statement is true?

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

Which two functions or operations are performed by the MAC sublayer? (Choose two.)

It is responsible for Media Access Control. It adds a header and trailer to form an OSI Layer 2 PDU.

Which action is taken by a Layer 2 switch when it receives a Layer 2 broadcast frame?

It sends the frame to all ports except the port on which it received the frame.

The Ethernet ____ sublayer is responsible for communicating directly with the physical layer.

MAC

Frame delimiting

The framing process provides important delimiters that are used to identify a group of bits that make up a frame. These delimiting bits provide synchronization between the transmitting and receiving nodes.

A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task?

shared memory buffering

When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?

store-and-forward