Cisco Network Chapter 07

Which is a multicast MAC address?

01-00-5E-20-AB-CD

All MAC addresses must be unique to the Ethernet device or Ethernet interface. To ensure this, all vendors that sell Ethernet devices must register with the IEEE to obtain a unique _________-bit code called the organizationally unique identifier (OUI).

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A switch learns the MAC address of any devices connected to it when:

A frame to the device leaves the switch

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

Autonegotiation

What are two methods for switching data between ports on a switch?

Cut-through switching Store-and-forward switching

Which part of an Ethernet Frame uses a pad to increase the frame field to at least 64 bytes?

Data field

Which part of an Ethernet Frame describes the higher-layer protocol that is encapsulated?

Ether Type

Which part of an Ethernet frame detects errors in the frame?

FCS

Match the following MAC addresses with their type:

FF:FF:FF:FF:FF:FF - Broadcast 07:AC:AD:01:CA:FE - Unicast 01:05:5E:AB:CD:EF - Multicast 10:20:AC:AD:FA:CE:01 - Invalid

The device with MAC address ending in 0C is sending a frame to the device with MAC address ending in 0F. The image shows part of the ethernet header and the switch's MAC address table. Where will the switch forward the frame? (Select all that apply)

Fa1 Fa3 Fa7 Fa9

A switch forward a frame following these guide lines:

If the destination MAC address is in the table - it will forward If the destination MAC address is not in the table - the switch will forward the frame out all ports except the incoming port

Which data link sublayer controls the network interface through software drivers?

LLC

Which part of an Ethernet Frame notifies the receiver to get ready for a new frame?

Preamble

Match these terms with their definition:

Store-and-forward switching - This method receives the entire frame and computes the CRC, then the frame is forwarded out to the correct port. Cut-through switching - This frame forwarding method forwards the frame before it is entirely received. At a minimum, the destination address of the frame must be read before the frame can be forwarded. Port-based memory - Frames are stored in queues that are linked to specific incoming and outgoing ports. Shared memory - Deposits all frames into a common memory buffer shared by all switch ports and the amount of buffer memory required by a port is dynamically allocated. Full-duplex - Both ends of the connection Half-duplex - Only one end of the connection can send at a time

The device with MAC address ending in 0C is sending a frame to the device with MAC address ending in 0F. The image shows part of the ethernet header and the switch's MAC address table. When the switch forwards the frame, which statement(s) are true? (select all that apply)

Switch adds the source MAC address which is currently not in the MAC address table Frame is a unicast frame and will be flooded to all active ports

What action will occur if a switch receives a frame with the destination MAC address FF:FF:FF:FF:FF:FF?

The switch forwards it out all ports except the ingress port.

What action will occur if a switch receives a frame and does have the source MAC address in the MAC table?

The switch refreshes the timer on that entry.

What is a function of the MAC sublayer? (Choose all that apply.)

Uses CSMA/CD or CSMA/CA to support Ethernet technology Checks for errors in received bits Control access to the media

FFFF.FFFF.FFFF is a _____ MAC address, 01-00-5E-AF-99-CC is a _____ MAC address, and FA:CE:B0:00:A1:A2 is a _____ MAC address.

broadcast, multicast, unicast

What are two examples of the cut-through switching method?

fragment-free switching fast-forward switching

What is the auto-MDIX feature on a switch?

the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection

What is the purpose of the FCS field in a frame?

to determine if errors occurred in the transmission and reception

What is the destination MAC address of the Ethernet frame as it leaves the PC1 if the final destination is the webserver?

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