Module 3.2

Question 1

A NIC may also provision multiple _____________ on the same card

Answer 1

ports

Question 2

Hardware address that uniquely identifies each network interface at layer 2 (Data Link). A ______________ is 48 bits long with the first half representing the manufacturer’s Organizationally Unique Identifier (OUI).

Answer 2

MAC address

Question 3

IEEE’s preferred term for a network interface’s unique identifier. An ________ corresponds to a MAC address while an EUI-64 is one that uses a 64-bit address space.

Answer 3

EUI-48

Question 4

Common term for the protocol data unit for layer 2.

Answer 4

frame

Question 5

Fields in a frame used to identify source and destination MAC addresses, protocol type, and error detection.

Answer 5

Ethernet Headers

Question 6

The basic format of an Ethernet frame

Answer 6

Preamble / SFD / Destination MAC / Source MAC / Ether Type / Payload / FCS

Question 7

____________________ are used for clock synchronization and as part of the CSMA/CD protocol to identify collisions early.

Answer 7

The preamble and Start Frame Delimiter (SFD)

Question 8

The _____________ consists of 8 bytes of alternating 1s and 0s with the SFD being two consecutive 1s at the end.

Answer 8

preamble

Question 9

Calculation of a checksum based on the contents of a frame used to detect errors.

Answer 9

Cyclic Redundancy Check (CRC)

Question 10

The error checking field contains a 32-bit (4-byte) checksum called a Cyclic Redundancy Check (CRC) or ____________________

Answer 10

Frame Check Sequence (FCS)

Question 11

The CRC is calculated based on the contents of the frame; the receiving node performs the same calculation and, if it matches, _________________ the frame

Answer 11

accepts

Question 12

A MAC/EUI address is a _________________identifier

Answer 12

48 bit (6 byte)

Question 13

The first _____________________ also known as the Organizationally Unique Identifier (OUI), identify the manufacturer of the adapter for MAC / EUI

Answer 13

six hex digits (3 bytes or octets),

Question 14

An organization can decide to use _______________________ in place of the manufacturers’ universal coding systems. This can be used to make MACs meaningful in terms of location on the network, but it adds a significant amount of administrative overhead.

Answer 14

locally administered addresses

Question 15

The ______ bit of a MAC address determines whether the frame is addressed to an individual node (0) or a group (1)

Answer 15

I/G

Question 16

A MAC address consisting entirely of 1s is the _____________ address (ff:ff:ff:ff:ff:ff) and should be processed by all nodes within the same _________________ domain

Answer 16

broadcast