Exercise 1

 1. Write very short answers to the following questions:

a. Define a computer network.

b. What is a simplex transmission mode?

C. What is half duplex transmission mode?

d. Write any two advantages of a computer network.

e. Write any two disadvantages of a computer network.

f. Write any two threats to the computer network.

g. Write any two characteristics of a local area network.

h. List any two features of a metropolitan area network.

i. Write any two features of a wide area network.

j. What is bandwidth?

k. Write any two advantages of a client-server network architecture.

1. What are the two disadvantages of a client-server network?

m. List any two features of a peer-to-peer network architecture.

n. Make a figure to illustrate a peer-to-peer network architecture.

0. Make a figure to explain and demonstrate a client-server network architecture.

p. Why the star topology is popular write in two points.

q. Write any two disadvantages of a ring topology.

г. Define the internet in a sentence.

S. Write about the intranet in a sentence.

t. Write two examples of web browsers.

u. Write any two popular email service providers' names.

v. What is a search engine?

w. Write the name of any two search engines.

x. Write any two advantages of e-mail.

y. What is a download?

z. What is an upload?

aa. What is the chat?

ab. Write about the URL.

ac. Write the URL of the website you like most.

ad. Write the technical term to describe cloud computing.

ae. Write the technical term to describe the IoTs.

2. Answer the following questions:

a. What is a computer network, and why is it essential in modern computing?

b. Define the term "data transmission" in the context of computer networks.

C. What are the primary purposes of computer networks?

d. Explain the difference between a LAN and a WAN in the context of computer networks.

e. How does a computer network enable resource sharing among connected devices?

f. What is the significance of network security in computer networks?

g. Describe the difference between simplex, half-duplex, and full-duplex data transmission modes.

h. When would you use simplex transmission in a computer network?

i. What is a Local Area Network (LAN), and what are its typical use cases?

j. Describe a Wide Area Network (WAN) and provide examples of WAN

technologies.

k. What is a Metropolitan Area Network (MAN), and how does it differ from LAN and WAN?

1. Define an Intranet and an Extranet, and highlight their differences.

m. How does full-duplex data transmission differ from half-duplex, and where

is it commonly used? n. What is network architecture, and why is it important in network design?

o. Compare and contrast the client-server and peer-to-peer network architectures.

p. Define network topology and describe the most common types, such as bus, star, and ring.

q. Discuss the advantages and disadvantages of each network topology.

г. Define bandwidth? How it is measured?

s. What is a network protocol, and why is it essential for network communication?

t. Provide examples of widely used network protocols and describe their specific purposes.

3. Fill in the blanks:

a. A computer network is a set of interconnected resources and information. that can share

b. One of the primary purposes of computer networks is to facilitate between devices.

C. A LAN stands for localized environment. Area Network and is typically used in a

d. In transmission mode, data flows in one direction only.

e. Full-duplex transmission allows data to flow in

directions

simultaneously. f. A connects computers within a limited geographic area, like a

home or office.

g. A connects computers over a larger geographic area, often across cities or countries.

h. In a client-server architecture, resources from a central server. devices request services or

i. In a peer-to-peer architecture, devices are considered share resources directly. and can

j. Ina network, all devices are connected to a single central cable.

k. star network topology has all devices connected to a central

1. A is a set of rules and conventions that govern how data is formatted and transmitted on a network.

m. HTTP and FTP are examples of application-layer

4. Write the technical term for the following:

a. Transmission of text, audio, video through some electronic means.

b. Data transmission only in one direction.

c. Transmission of data in both direction but only one way at a time.

d. Transmission of data in both directions simultaneously at a same time.

e. Interconnection between two or more than two computers.

f. Smallest type of computer network.

g. Largest computer network.

h. Network of network.

i. Privately owned network of network.

j. Physical structure of computer network.

k. Document prepared by markup language.

1. Device used to connect a PC with a telephone line. m. A network limited with a room or building.

n. The computer on which users run applications.

0. Cabling structure of LAN.

p. Each computer or device on a network.

q. A device that controls two dissimilar networks.

г. The amount of data that can be transmitted through communication channels in a fixed time period.

s. A server where incoming emails are collected in mailbox.

t. A computer that provides services to other computers.

u. Operating system that can handle network.

v. A cable that transmits light signals.

w. The process of sending and receiving data and information between two or

more than two person.

x. Transmission of data or information that can take place in only one direction.

y. Basic componentsrequired to make data communication.

z. Wire is made up of copper and a pair of wires are twisted together and insulated with plastic.

aa. Cable is made up of copper or aluminium wire with an inner conductor surrounded by insulating layer and again surrounded by conducting shield.

ab. Cable uses light wave to carry data signal from one end of cable to other end.

ac. Radio signal for receiving and transmitting electronic data.

ad. High frequency wave which is used to transfer signals through atmosphere.

ae. Two or more than two computers connected to each other through wire of wireless media to share data or information, hardware, software and other resources.

af. Provides a port on the back of system unit to connect a computer in network. ag. An important software which controls and manages computer network.

ah. A set of rules followed for interconnection and communication between computers in a network.

ai. Defines how the computer communicates and interacts with each other on network.

aj. Inter-connected pattern of network components.

ak. Connection of two or more computers to share information.

al. Sending and receiving messages electronically through the Internet.

am. Buying and selling of goods, products, or services over the Internet.

an. The websites that search documents for specified keywords in Www.

ao. A port on the back of the system unit to connect a computer in network.

5. Write the full form of:

a. LAN

b. MAN

C. WAN

d. INTERNET

e. INTRANET

f. STP

g. UTP

h. BNC

i. RJ-45

j. SMPT

k. FTP

1. TCP/IP

m. VOIP

n. ADSL

0. DSL

p. IPX/SPX

q. ARPANET

г. SMA

s. NIC

u. WWW

w. URL

y. ATM

aa. E-fax

t. MODEM

V. POP

Χ. ISP

Z. E-mail

ab. E-commerce