PRELIM COMMS 3

Question 1

The process or study of sending and/or receiving transmissible and storable computer information.

Answer 1

DATA COMMUNICATION

Question 2

the interconnection of multiple networks.

Answer 2

internet

Question 3

the biggest example of an internetwork. (World Wide Web)

Answer 3

The Internet

Question 4

Covers and connects different devices in a single office, building, or campus.

Answer 4

Local Area Network (LAN)

Question 5

Can span a town, a state, a country, or even the world.

Answer 5

Wide Area Network (WAN)

Question 6

TWO MOST COMMON TYPE OF SWITCHED NETWORKS

Answer 6

• CIRCUIT-SWITCHED NETWORK
• PUBLIC SWITCHED TELEPHONE NETWORK (PSTN)

Question 7

Type of switched network that is Ideal for communications that require data to be transmitted in real-time.

Answer 7

CIRCUIT-SWITCHED NETWORK

Question 8

Type of switched network that is more flexible and more efficient if some amount of delay is acceptable.

Answer 8

PUBLIC SWITCHED TELEPHONE NETWORK (PSTN

Question 9

The Philippines was connected to the internet on March 29, 1994, by

Answer 9

Benjie Tan

Question 10

Three companies filled a void by forming a nonprofit organization

Answer 10

, IBM, Verizon, and Merit

Question 11

Each node is connected with each other.

Answer 11

MESH TOPOLOGY

Question 12

End devices are connected centrally on a hub.

Answer 12

STAR TOPOLOGY

Question 13

Backbone links all the devices in a network.

Answer 13

BUS TOPOLOGY

Question 14

Each device has a dedicated point-to-point connection with only two devices on either side of it.

Answer 14

RING TOPOLOGY

Question 15

ELEMENTS OF A GOOD NETWORK DESIGN

Answer 15

• Cost
• Speed
• Availability
• Reliability
• Scalability
• Security

Question 16

A device used to convert signals.

Answer 16

MODEM/MEDIA CONVERTER

Question 17

o Layer 1 and passive device
o No security
o 1 big collision domain

Answer 17

ETHERNET HUB

Question 18

o Layer 2 and active device
o Uses MAC addressing.
o Traffic Filtering: Software Based
o 1 broadcast domain
o Every port is a collision domain.

Answer 18

BRIDGE

Question 19

o Layer 2 and active device.
o Uses Mac addressing.
o Traffic filtering: hardware functions (ASICS)
o 1 broadcast domain
o Every port is a collision domain.

Answer 19

SWITCH

Question 20

o Layer 3 and active device.
o Uses IP addressing.
o Routes packets from one network to another
o Every port is a broadcast domain.

Answer 20

ROUTER

Question 21

Security tool to filter and block unauthorized traffic.

Answer 21

FIREWALL

Question 22

o IDS is a security tool used to monitor traffic for malicious activity or policy violations.
o IPS is a security tool used to inspect, detect, and classify network traffic.

Answer 22

IDS/IPS

Question 23

Manage the flow of information between server and endpoint devices.

Answer 23

LOAD BALANCER

Question 24

o Acts as another gateway
o Provides varying levels of functionality, security, and privacy.

Answer 24

PROXY SERVER

Question 25

o Acts as a point of communication wirelessly
o IEEE 802.11 standards

Answer 25

WIRELESS ACCESS POINT

Question 26

• Formerly: Groupe Speciale Mobile
• Founded 1982
• Pan-European Standard
• More than 130 countries use GSM.
• More than 100 million subscribers.
• The most popular wireless communication system

Answer 26

GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM)