Week 4

Question 1

means communication at a distance

Answer 1

Telecommunication

Question 2

refers to information presented in whatever form is agreed upon by the parties creating and using the ________.

Answer 2

Data

Question 3

are the exchange of data between two devices via some form of transmission medium such as a wire cable

Answer 3

Data Communication

Question 4

What are the 4 Characteristics for effective data communication system?

Answer 4

Delivery
Accuracy
Timeliness
Jitter

Question 5

the system must deliver data to the correct destination. Where and how the data can be delivered.

Answer 5

Delivery

Question 6

Where and how the data can be delivered.

Answer 6

Delivery

Question 7

The system must deliver the data without error and accurately

Answer 7

Accuracy

Question 8

Meaning the data will be delivered without any errors and flawless.

Answer 8

Accuracy

Question 9

The system must deliver data in timely manner.

Answer 9

Timeliness

Question 10

Data can be sent and received to its destination without any delays.

Answer 10

Timeliness

Question 11

refers to the variation in the packet arrival time.

Answer 11

Jitter

Question 12

refers to how long does it take for data will be arrived

Answer 12

Jitter

Question 13

What are the 5 components of data communication system

Answer 13

Message
Sender
Receiver
Transmission Medium
Protocol

Question 14

It is the information (data) to be communicated. E.g. text, numbers, pictures, audio, and video.

Answer 14

Message

Question 15

is the device that sends the data message. E.g. computer, workstation, telephone handset, video camera.

Answer 15

Sender

Question 16

is the device that receives the message. E.g. computer, workstation, telephone handset, television.

Answer 16

Receiver

Question 17

it is the physical path by which a message travels from sender to receiver. E.g. twisted-pair wire, coaxial cable, fiber-optic cable, radio waves.

Answer 17

Transmission Medium

Question 18

is a set of rules that govern data communication.

Answer 18

Protocol

Question 19

A connection of 2 or more computers via communication channel for the purpose of sharing files and resources such as printers, scanners, cd rom and other peripheral devices.

Answer 19

Network

Question 20

what are the network supports the way we live

Answer 20

1. Decide what to wear using online current weather conditions.
2. Find the least congested route to your destination, displaying weather and traffic video from webcams.
3. Check your bank balance and pay bills electronically.
4. Receive and send e-mail, or make an internet phone call, at an internet cafe over lunch.
5. Obtain health information and nutritional advice from experts all over the world, and post to a forum to share related health or treatment information.
6. Download new recipes and cooking techniques to create a spectacular dinner.
7. Post and share you photographs, home videos, and experiences with friends or with the world.

Question 21

What are the examples of todays popular communication tools

Answer 21

1. Instant Messaging (online chat)
2. Weblogs (personal web pages)
3. Wikis (collaborative tool)
4. Podcasting (pull audio files)
5. Collaboration Tools (conferencing tools)

Question 22

What are the “Network support the way we learn

Answer 22

1. Online Instructional Materials
2. Portals
3. Collaboration Tools

Question 23

What are the “Network support the way we work”

Answer 23

1. Remote Access
2. Multiple Resources

Question 24

What are the “Network support the way we play”

Answer 24

1. Online Games
2. Online Entertainment
3. Instant Messaging
4. Online Travel

Question 25

What are the elements of a network

Answer 25

Rules Medium Message Devices

Question 26

the most common device for interconnecting local area networks

Answer 26

Swtich

Question 27

provides security to networks

Answer 27

Firewall

Question 28

helps direct messages as they travel across a network

Answer 28

Router

Question 29

a specific type of router often found in home networks

Answer 29

Wireless Router

Question 30

used to summarize a group of networking devices, the details of which may be unimportant to the discussion at hand.

Answer 30

Cloud

Question 31

one form of WAN interconnection, represented by the lightning bolt-shaped line

Answer 31

Serial Link

Question 32

used physical cables to connect devices.

Answer 32

Wired Networks

Question 33

use radio waves to communicate between devices.

Answer 33

Wireless Network

Question 34

These are also connected to wire networks, at some point.

Answer 34

Wireless Network

Question 35

Host/devices that are running in multiple network

Answer 35

Multiple

Question 36

Multiple host/devices that are running in single network

Answer 36

Converge

Question 37

services are running on multiple networks

Answer 37

Multiple

Question 38

data networks carry multiple services on one network

Answer 38

Converge

Question 39

increase priority for **services like telephony or video distribution.**

Answer 39

Time-sensitive communication

Question 40

decrease priority for web page retrieval or e-mail.

Answer 40

Non time-sensitive communication

Question 41

increase priority for **production control** or business transaction data.

Answer 41

High importance to organization

Question 42

decrease priority or block unwanted activity, like peer-to-peer file sharing or live entertainment.

Answer 42

Undesirable communication

Question 43

that prevents communications and transactions occurring, with consequent loss of business. Meaning some application in a single network prohibiting user to access it that may result loss of business/organization

Answer 43

Network Outage

Question 44

If network security is weak, attackers may have an access to business/personal accounts that may lead to financial loss

Answer 44

Company Financial Loss

Question 45

If your organization have weaker security, some of the confidential information of your company may expose to other

Answer 45

Intellectual Property Theft

Question 46

______- and loss personal or business funds.

Answer 46

Misdirection

Question 47

Customer contract details that become known to competitors or made public, resulting in a ______confidence in the business.

Answer 47

loss of market

Question 48

What are the Quality Services

Answer 48

1. The internet is currently providing an acceptable level of fault tolerance and scalability for its users. 2. New applications available to users over internet works create higher expectations for the quality of the delivered services. 3. Managing the delay and packet loss parameters on a network becomes the secret to a successful end-to-end application quality solution. 4. Prioritize which types of data packets must be delivered at the expense of other types of packets that can be delayed or dropped. 5. Classification * Assign a precise priority for each type f communication. * Assigning priorities