Deck 4: Ethernet Technology

Question 1

The Preamble contains ____ bytes with the identical pattern 10101010.

A) 5
B) 6
C) 7
D) 8

Answer 1

C

Question 2

The AUI (attachment unit interface) may be a transceiver cable up to ____ meters in length.

A) 25
B) 50
C) 75
D) 100

Answer 2

B

Question 3

Fast Ethernet is implemented in several different ways, all collectively referred to as ____.

A) 100baseT technology
B) 10baseT technology
C) 10base2 technology
D) 100base2 technology

Answer 3

A

Question 4

The LSB (Least Significant Bit) for the SFD is set high (1).

Question 5

For Ethernet, the MTU may range from ____.

A) 68 to 1300
B) 68 to 1500
C) 1300 to 1500
D) 68 to 9000

Question 6

The PLS (physical signaling) is where Manchester encoding is applied to the bit stream.

Question 7

The ISM band (industrial, scientific, medical) is used for transmission at the ____ frequency for scientific data.

A) 902 to 928 MHz
B) 1.20 GHz to 2.0715 GHz
C) 2.40 GHz to 2.4835 GHz
D) 5.725 GHz to 5.850 GHz

Question 8

The destination address is the destination ____________________ address of the station that is to receive the frame.

Question 9

Originally, the ____ specification was used to standardize Ethernet communication over fiber.

A) FIROL
B) FIOS
C) FLIOR
D) FOIRL

Question 10

When all the bits of a frame have been received, it is possible that the last bit received is not the last bit of the final byte in the frame.

Question 11

____ are designed to prohibit retransmission of any frames for a short period of time when jabbering is detected, to prevent the network from being saturated with meaningless signals.

A) Repeaters
B) Stretchers
C) Flippers
D) Bouncers

Question 12

The SFD (Start Frame Delimiter) is the 1-byte pattern ____.

A) 10101011
B) 10101010
C) 10101000
D) 10000011

Question 13

The Ethernet ____________________ is the time required to transmit 512 bits.

Question 14

Packet ____________________ keep track of many different Ethernet errors.

Question 15

The ____________________ area is where all data from the upper networking layers are carried.

Question 16

The ____________________ coding method (originally developed for Fibre Channel) replaces 8-bit data values with 10-bit code words.

Question 17

An example of a MAC address is ____.

A) 135.48.79.4
B) 00-C0-F0-27-64-E2
C) 11-22-33-44
D) AA-BB-AA-BB-CC-E2-AF

Question 18

Every Ethernet device manufactured (NIC, router) contains a unique ____-bit MAC address assigned by the manufacturer.

A) 24
B) 32
C) 48
D) 64

Question 19

Diffused IR uses line-of-sight IR lasers and provides a faster data rate than diffused IR.

Question 20

When the frame size is smaller, more of the available bandwidth is utilized.

Question 22

Discuss excess utilization.

Question 23

Describe the destination address of an Ethernet frame.

Question 24

List three properties that 10base5, 10base2 and 10baseT have in common.

Question 25

What is the interframe gap?

Question 26

Describe CSMA/CA.