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Review Questions - Chapter 2 Ethernet Networking and Data Encapsulation

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Network Fundamentals 1.6 Select the appropriate cabling type based on implementation requirements 1.4 Compare and contrast collapsed core and three-tier architectures LAN Switching T echnologies 2.2 Interpret Ethernet frame format
Kessi Silva
Quiz by Kessi Silva, updated more than 1 year ago
Kessi Silva
Created by Kessi Silva over 6 years ago
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Resource summary

Question 1

Question
1. In the accompanying graphic, what is the name for the section of the MAC address marked as unknown?
Image:
Selection 001 (binary/octet-stream)
Answer
  • IOS
  • OSI
  • ISO
  • OUI

Question 2

Question
__________on an Ethernet network is the retransmission delay that’s enforced when a collision occurs.
Answer
  • Backoff
  • Carrier sense
  • Forward delay
  • Jamming

Question 3

Question
On which type of device could the situation shown in the diagram occur?
Image:
Selection 002 (binary/octet-stream)
Answer
  • Hub
  • Switch
  • Router
  • Bridge

Question 4

Question
In the Ethernet II frame shown here, what is the function of the section labeled “FCS”?
Image:
Selection 003 (binary/octet-stream)
Answer
  • Allows the receiving devices to lock the incoming bit stream.
  • Error detection
  • Identifies the upper-layer protocol
  • Identifies the transmitting device

Question 5

Question
A network interface port has collision detection and carrier sensing enabled on a shared twisted-pair network. From this statement, what is known about the network interface port?
Answer
  • This is a 10 Mbps switch port.
  • This is a 100 Mb/s switch port.
  • This is an Ethernet port operating at half-duplex.
  • This is an Ethernet port operating at full-duplex.
  • This is a port on a network interface card in a PC.

Question 6

Question
For what two purposes does the Ethernet protocol use physical addresses? (Choose two.)
Answer
  • To uniquely identify devices at layer 2
  • To allow communication with devices on a different network
  • To differentiate a layer 2 frame from a layer 3 packet
  • To establish a priority system to determine which device gets to transmit first
  • To allow communication between different devices on the same network
  • To allow detection of a remote device when its physical address is unknown

Question 7

Question
Between which systems could you use a cable that uses the pinout pattern shown here?
Image:
Selection 004 (binary/octet-stream)
Answer
  • With a connection from a switch to a switch
  • With a connection from a router to a router
  • With a connection from a host to a host
  • With a connection from a host to a switch

Question 8

Question
In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)
Answer
  • When they receive a special token
  • When there is a carrier
  • When they detect that no other devices are sending
  • When the medium is idle
  • When the server grants access

Question 9

Question
What type of cable uses the pinout shown here?
Image:
Selection 005 (binary/octet-stream)
Answer
  • Fiber optic
  • Crossover Gigabit Ethernet cable
  • Straight-through Fast Ethernet
  • Coaxial

Question 10

Question
When configuring a terminal emulation program, which of the following is an incorrect setting?
Answer
  • Bit rate: 9600
  • Parity: None
  • Flow control: None
  • Data bits: 1

Question 11

Question
Which part of a MAC address indicates whether the address is a locally or globally administered address?
Answer
  • FCS
  • I/G bit
  • OUI
  • U/L bit

Question 12

Question
What cable type uses the pinout arrangement shown below?
Image:
Selection 006 (binary/octet-stream)
Answer
  • Fiber optic
  • Rolled
  • Straight-through
  • Crossover

Question 13

Question
Which of the following is not one of the actions taken in the operation of CSMA/CD when a collision occurs?
Answer
  • A jam signal informs all devices that a collision occurred.
  • The collision invokes a random backoff algorithm on the systems involved in the collision.
  • Each device on the Ethernet segment stops transmitting for a short time until its backoff timer expires.
  • All hosts have equal priority to transmit after the timers have expired.

Question 14

Question
Which of the following statements is false with regard to Ethernet?
Answer
  • There are very few collisions in full-duplex mode.
  • A dedicated switch port is required for each full-duplex node.
  • The host network card and the switch port must be capable of operating in full-duplex mode to use full-duplex.
  • The default behavior of 10Base-T and 100Base-T hosts is 10 Mbps half-duplex if the autodetect mechanism fails.

Question 15

Question
In the following diagram, identify the cable types required for connections A and B.
Image:
Selection 007 (binary/octet-stream)
Answer
  • A= crossover, B= crossover
  • A= crossover, B= straight-through
  • A= straight-through, B= straight-through
  • A= straight-through, B= crossover

Question 16

Question
In the following image, match the cable type to the standard with which it goes. 1000Base-T ::::: IEEE 802.3u 1000Base-SX ::: IEEE 802.3 10Base-T ::::::::: IEEE 802.3ab 100Base-TX ::::: IEEE 802.3z
Answer
  • IEEE 802.3u ::::::: 100Base-Tx IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 1000Base-SX
  • IEEE 802.3u :::::::1000Base-T IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 100Base-Tx IEEE 802.3z ::::::: 1000Base-SX
  • IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 100Base-Tx
  • IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 1000Base-T IEEE 802.3ab ::::: 10Base-T IEEE 802.3z ::::::: 100Base-Tx

Question 17

Question
The cable used to connect to the console port on a router or switch is called a _________cable.
Answer
  • Crossover
  • Rollover
  • Straight-through
  • Full-duplex

Question 18

Question
Which of the following items does a socket comprise?
Answer
  • IP address and MAC address
  • IP address and port number
  • Port number and MAC address
  • MAC address and DLCI

Question 19

Question
Which of the following hexadecimal numbers converts to 28 in decimal?
Answer
  • 1c
  • 12
  • 15
  • ab

Question 20

Question
What cable type is shown in the following graphic?
Image:
Selection 008 (binary/octet-stream)
Answer
  • Fiber optic
  • Rollover
  • Coaxial
  • Full-duplex
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