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Rach chap 2
Chap 1 of networking essentials
24
Computer Networking
Post-Graduate
06/11/2017

Additional Computer Networking Flashcards

 


 

Cards

Term

Which of the following is a limitation of early networks that used a daisy chain method of connecting computers (choose all that apply)?

a. Total number of computers that could be connected

b. Processing speed of the computers connected

c. Cable length

d. No internet access

Definition
a and c
Term

Which of the following is true of a repeater?

a. Receives frames and forwards them

b. determines which network to send a packet

c. receives but signals and strengthens them

d. Has a burned in MAC address for each port

Definition
c
Term

Which of the following is true of a hub?

a. Usually has jsut two ports

b. Transmits regenerated signals to all connected ports

c. Usually has more than four ports

d. Works with MAC addresses

Definition
b and c
Term

Which of the following is a unit of measurement

by which a hubs bandwidth is usually specified?

a. Bytes per second

b. Bits per second

c. packets per second

d bytes per minute

Definition
b
Term

Which of the following describes how devices connected to a hub use the speed at which the hub can transmit data?

a. bndwidth optimisation

b. bandwidth dedication

c. bandwidth sharing

d. bandwidth multiplier

Definition
c
Term

Which of the following is a likely indicator light on a hub (choose all that apply)?

a. CRC error

b. Link status

c. Connection speed

d. Activity

e. Signal strength

Definition
b, c, d
Term

Which of the following describes how devices connected to a switch use the speed at which the switch can transmit data?

a. dedicated bandwidth

b. half-duplex bandwidth

c. half-scale bandwidth

d. shared bandwidth

Definition
a
Term

What does a switch use to create its switching table?

a. source IP addresses

b. destination logical addresses

c. destination physical addresses

d. source MAC addresses

Definition
d
Term

What purpose does the timestamp serve in a switching table?

a. tells the switch when to forward the frame

b. tells the switch how long to wait for a response

c. tells the switch when to delete an entry

d. tells the switch how long it has been running

Definition
c
Term

What feature of a switch allos devices to effectively communicate at 200Mbps on a 100 Mbps switch?

a. uplink port

b. full duplex mode

c. shared bandwidth

d. bit strengthening

e. frame doubling

f. signal regeneration

Definition
b
Term

To which device is a wireless access point most similar in how it operates?

a. hub

b. switch

c. NIC

d. router

Definition
a
Term

What's the purpose of the Request to send (RTS) signal in wireless networking?

a. It allows the AP to reuest which device is the transmitting station

b. It alows the AP to tell all stations that its ready to transmit data

c. It allows a client to notify the AP that its ready to send data

d. It allows a client to request data from the AP

Definition
c
Term

Which of the following is a common operational speed of a wireless network?

a. 10Kbps

b. 110Gbps

c. 600 Kbps

d. 11 Mbps

Definition
d
Term

Which of the following is a task performed by a NIC and its driver (choose all that apply)?

a. Provides a connection to the network medium

b. Converts bit signals into frames for transmission on the medium

c. Receives packets from the network protocol and creates frames

d. adds  header before sending a frame to the network protocol

e. adds error checking data to the frame

Definition
a and c and e
Term

Which of the followign best describes a MAC address?

a. a 24 bit number expressed as two 12 decimal digits

b. two 24 bit numbers, in which one is the OUI

c. a 48 bit number composed of 12 octal digits

d. a dotted decimal number burned into the NIC

Definition
b - OUI = organisational unique identifier (vendor)
Term

Under which circumstances does a NIC allow inbound communications to pass through the interface (choose all that apply)?

a. The source MAC address is the broadcast address

b. The destination MAC address matches the built in MAC address

c. The destination MAC address is all binary 1s

d. The NIC is operating in exclusive mode

Definition
b and c
Term

How does a protocol analyser capture all frames?

a. It configures the NIC to capture only unicast frames

b. It sets all incoming destination addresses to be broadcast addresses

c. It configures the NIC to operate in promiscuous mode

d. it sets the exclusive mode option on the NIC

e. It captures only multicast frames

Definition
c
Term

In windows 10 which of the following dsplays info about currently installed NICs?

a. Network connections

b. NICs and Drivers

c. Local area networks

d. computers and devices

Definition
a
Term

Which of the following is the purpose of the SSID?

a. Assigns an address to a wireless NIC

b. Acts as a unique name for a LAN

c. Acts as a security key for securing a network

d. identifies a wireless network

Definition
d
Term

Which of the following describes the functions of routers (choose all that apply)

a. Forward frames

b. Connect LANs

c. Attach computers to the internetwork

d. work with packets and IP addresses

Definition
b and d
Term

What information is found in a routing table?

a. Computer names and IP addresses

b. Network addresses and interfaces

c. MAC addresses and ports

d. IP addresses and MAC addresses

Definition
b
Term

You currently have 15 switches with an avg of 20 workstations connected to each.  The switches are connected to one another so that all 300 computers can communicate with each other in a single LAN.  You have been detecting a high % of broadcast frames on this LAN which you think is impacting performance.  What should you do?

a. Connect the switches in groups of five and connect each group of switches to a central hub

b. upgrade switches to a faster speed

c. reorganise the network into smaller groups and connect each group to a router

d. disable broadcast forwarding on the switches

Definition
c
Term

If a router receives a packet with a destination network address unknown to the router what does it do?

a. send the packet out all interfaces

b. discard the packet

c. add the destination network to its routing table

d. query the network for the destination network

Definition
b
Term

Which of the following is true about routers?

a. forward broadcasts

b. use default routes for unknown network addresses

c. forward unicasts

d. used primarily to connect workstations

Definition
b and c
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