CCNA 1: Chapter 5 Ethernet

Of the following, which two are functions of the MAC sublayer?

• It's responsible for Media Access Control

• It performs the function of NIC driver software

• It adds a header and trailer forming an OSI Layer 2 PDU

• It handles communication between upper and lower layers

• It adds control information to network protocol layer data

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?

• fragment-free

• fast-forward

• cut-through

• store-and-forward

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

• source MAC address in the header

• destination MAC address in the header

• protocol type in the header

When a switch receives a Layer 2 broadcast frame, what will it do with the frame?

• Drop the frame

• Send the frame out all ports except the port on which it received the frame

• Send the frame to all ports that are registered to forward broadcasts

• Send the frame to all ports

How is the binary number 0000 1010 expressed in hexadecimal?

• 10

• A

• F

• 91

How do you express 3F in decimal?

• 18

• 34

• 45

• 46

• 63

The address 01-00-5E-0A-00-02 is an example of what type of MAC address?

• one that reaches every host inside a local subnet

• an address that reaches one specific host

• an address that reaches every host in the network

• an address that reaches a specific group of hosts

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?

• port-based buffering

• level 1 cache buffering

• shared memory buffering

• fixed configuration buffering

What purpose does ARP serve?

• translate URLs to IP addresses

• resolve IPv4 addresses to MAC addresses

• provide dynamic IP configuration to network devices

• convert internal private addresses to external public addresses

On Ethernet networks, the hexadecimal address FF-FF-FF-FF-FF-FF represents the ______________ MAC address.

• broadcast

• unicast

• multicast

• anycast