Misc

Question 0

Segmentation

Answer 0

Data divided into smaller parts during transmission

Question 1

Three elements of communication:

Answer 1

Sender, receiver, channel (medium or pathway)

Question 2

Benefits of segmentation

Answer 2

Increase reliability of network communications

Multiplexing: interleaving pieces of separate conversations together on the network

Question 3

Components of a network

Answer 3

Devices, media, services and processes

Question 4

End device is…

Answer 4

Sender or receiver
Aka hosts
Ex. Pc, server, VoIP, mobile devices, security cameras

Distinguished by ip addresses

Question 5

Intermediary devices

Answer 5

Ex: router, switch, firewall, hub

Directs data path

Question 6

Network media

Answer 6

Is communication carried across a medium

Question 7

Criterion for choosing network medium

Answer 7

Distance the medium can carry a signal

Environment in which it is installed

Cost and installation of media

Question 8

LAN

Answer 8

Spans single geographical area; ex: single business, campus, region

Question 9

Wan

Answer 9

Via a telecommunications service provider network; connect LAN in geographically separate locations.

Question 10

Intranet

Answer 10

A private connection of LAN and WANs that belong to an organization; only accessible by members, employees, others with authorization

Question 11

NIC

Answer 11

Provides physical connection to the network

Question 12

Interface

Answer 12

Specialized ports on an internet working device that connects to individual networks.

Question 13

Protocol suite

Answer 13

A group of interrelated protocols that are necessary to perform a communication function; technology ondependent

Question 14

Osi model

Answer 14

Primary reference model for network communications

Question 15

Network access layer

Answer 15

Consists of data link and physical layers of osi model

Question 16

Protocol data units

Answer 16

Data is application
Segment is transport layer
Packet is network layer
Frame is data link
Bits or signals is physical

Question 17

Data encapsulation process

Answer 17

Build data, segment data, put segments into packets, encapsulate into frames, convert into signals

Then, reverse process towards destination

Question 18

Addressing in the network

Answer 18

Upper layers: encoded app data
Transport layer: port numbers (specific process)
Network layer: IP address (routers, different networks.)
Data link: MAC address
Physical: signals, header of layer 2

Question 19

Protocols must:

Answer 19

Match on source and destination hosts