chapter 3

Question 1

write four role of SNA

Answer 1

1-account provision
2-hardware management,
3-perform backup,
4-install and upgrade software,
5-trouble shooting ,
6-system monitoring,
7- maintaining local document and
8-help users

Question 2

Any computer that is to be connected to a network, needs to have a _______

Answer 2

Network Interface card

Question 3

To connect together different devices to make up a network, you need ______

Answer 3

network cable

Question 4

________ Used to boost the signal between two cable segments or wireless access points

Answer 4

Repeater

Question 5

_________ An unintelligent network device that sends one signal to all of the stations connected to it

Answer 5

Hub

Question 6

_______Connects two LANs and forwards or filters data packets between them

Answer 6

Bridge

Question 7

_______ A device that connects any number of LANs

Answer 7

Router

Question 8

_______ Split large networks into small segments, decreasing the number of users sharing the same network resources and bandwidth

Answer 8

Switch

Question 9

_______ is anetworkpoint that acts as an entrance to another network.

Question 10

T/F Routers and Gateways often refer to the same device.?

Answer 10

True

Question 11

___________ Isolates internal network computers from the internet

Answer 11

Proxy server

Question 12

________ is The probability where simultaneous data transmission leads to collision

Answer 12

Collision domain

Question 13

________A logical division of computers in which all nodes can reach each other by broadcast

Answer 13

Broadcast domain

Question 14

______ The transmission is stopped and they send a jam signal(to notify others collision has occurred) and then wait for a random time before retransmission

Answer 14

CSMA/CD

Question 15

___________Devices first sense and if the medium is being used they wait for short amount of time before checking again

Answer 15

CSMA/CA

Question 16

A router use its _______ to determine the best path

Answer 16

routing table

Question 17

______ and ______ routing protocols are used to learn about remote networks and build tables.

Answer 17

Static and dynamic

Question 18

If multiple paths to a destination are configured on a router, the path installed in the routing table is the one with the best ___________.

Answer 18

Administrative Distance (AD)

Question 19

______ Used for routing inside an autonomous system & used to route within the individual networks themselves

Answer 19

IGP

Question 20

_______Used for routing between autonomous systems

Answer 20

EGP

Question 21

Incomplete view of network topology
Generally, periodic updates

Answer 21

Distance vector

Question 22

complete view of network topology
Generally, not periodic updates

Answer 22

Link state

Question 23

_______Enable remote access to the device.

Answer 23

Virtual terminal line

Question 24

_________ is a logical partition of a layer 2 network

Answer 24

VLAN (Virtual LAN)

Question 25

importance of VLAN

Answer 25

security, cost reduction and better performance

Question 26

type of VLAN

Answer 26

data, default, native and management VLAN

Question 27

______carries more than one VLAN

Answer 27

VLAN trunk