What is a computer network in Computer Networks - Practice Questions & Exercises

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the Basic Definition

Which of the following best describes a computer network?

A A group of computers connected to share resources and information.

B A single computer running multiple programs at the same time.

C A software application that manages files on a computer.

D A device that stores data without any connection to other devices.

💡 Hint

Think about how computers communicate with each other.

A computer network is a set of computers linked together to share data and resources like printers or internet connections.

📋 Factual

intermediate

Types of Computer Networks

Which type of computer network covers a small area like a home or office?

A Metropolitan Area Network (MAN)

B Wide Area Network (WAN)

C Local Area Network (LAN)

D Global Area Network (GAN)

💡 Hint

Think about the network type used inside buildings.

A Local Area Network (LAN) connects computers within a small area such as a home or office.

🚀 Application

advanced

Real-Life Application of Networks

If you want to share a printer between several computers in your office, what do you need?

A A separate printer for each computer.

B A computer network connecting those computers.

C A software program installed on each computer only.

D A USB cable connected to one computer only.

💡 Hint

Think about how devices communicate to share hardware.

Sharing a printer among multiple computers requires a network so all computers can send print jobs to the printer.

🔍 Analysis

advanced

Analyzing Network Components

Which device is essential in a computer network to connect multiple devices and allow communication?

A Router

B Monitor

C Keyboard

D Printer

💡 Hint

This device directs data between computers and the internet.

A router connects multiple devices in a network and manages data traffic between them and the internet.

❓ Comparison

expert

Comparing Network Scopes

Which statement correctly compares LAN and WAN?

A LAN and WAN are exactly the same in size and function.

B LAN is slower than WAN in all cases.

C WAN is only used inside homes; LAN is used worldwide.

D LAN covers a small area; WAN covers a large area like cities or countries.

💡 Hint

Think about the physical size each network type covers.

LAN (Local Area Network) covers small areas like homes or offices, while WAN (Wide Area Network) covers large areas such as cities or countries.

Practice

1. What is the main purpose of a computer network?

easy

A. To connect multiple computers to share data and resources

B. To increase the speed of a single computer

C. To store data on a single device

D. To protect a computer from viruses

Solution

1. Step 1: Understand the definition of a computer network

   A computer network is a group of computers connected to share data and resources.

2. Step 2: Identify the main purpose from the options

   Only To connect multiple computers to share data and resources describes connecting multiple computers to share data and resources.

3. Final Answer:

   To connect multiple computers to share data and resources -> Option A

4. Quick Check:

   Network purpose = sharing data and resources [OK]

Hint: Networks connect computers to share data and resources [OK]

Common Mistakes:

• Thinking a network speeds up a single computer
• Confusing storage with networking
• Assuming networks only protect from viruses

2. Which of the following is a correct example of a computer network type?

easy

A. Offline Data Network (ODN)

B. Single Computer Network (SCN)

C. Wireless Local Area Network (WLAN)

D. Personal Storage Network (PSN)

Solution

1. Step 1: Recall common network types

   Common network types include LAN, WAN, and WLAN (wireless LAN).

2. Step 2: Match options with known network types

   Only Wireless Local Area Network (WLAN) is a valid network type.

3. Final Answer:

   Wireless Local Area Network (WLAN) -> Option C

4. Quick Check:

   WLAN is a real network type [OK]

Hint: Look for known network acronyms like LAN or WLAN [OK]

Common Mistakes:

• Choosing made-up network names
• Confusing storage or offline terms with networks
• Assuming all options are valid

3. If a home network connects 3 devices wirelessly to share files and internet, what type of network is this?

medium

A. Local Area Network (LAN)

B. Wide Area Network (WAN)

C. Metropolitan Area Network (MAN)

D. Personal Area Network (PAN)

Solution

1. Step 1: Understand network size categories

   LAN covers a small area like a home or office; WAN covers large areas; MAN covers cities; PAN covers very close devices.

2. Step 2: Identify the network type for 3 devices in a home

   A home wireless network connecting a few devices is a Local Area Network (LAN).

3. Final Answer:

   Local Area Network (LAN) -> Option A

4. Quick Check:

   Home network = LAN [OK]

Hint: Home or office small networks are LANs [OK]

Common Mistakes:

• Confusing WAN with home networks
• Thinking PAN is for multiple devices in a home
• Mixing MAN with home networks

4. Identify the error in this statement: "A computer network only connects devices using cables."

medium

A. Networks do not connect devices at all

B. Networks can also connect devices wirelessly

C. Networks only connect devices in the same room

D. Networks require internet to function

Solution

1. Step 1: Analyze the statement about network connections

   The statement says networks only use cables, which ignores wireless connections.

2. Step 2: Identify the correct correction

   Networks can connect devices both wired and wirelessly, so Networks can also connect devices wirelessly corrects the error.

3. Final Answer:

   Networks can also connect devices wirelessly -> Option B

4. Quick Check:

   Networks = wired or wireless [OK]

Hint: Remember networks can be wired or wireless [OK]

Common Mistakes:

• Thinking networks only use cables
• Assuming networks need internet always
• Believing networks connect only same-room devices

5. A company wants to connect 5 offices in different cities to share data securely. Which network type should they use?

hard

A. Local Area Network (LAN)

B. Personal Area Network (PAN)

C. Metropolitan Area Network (MAN)

D. Wide Area Network (WAN)

Solution

1. Step 1: Understand network types by coverage area

   LAN covers small areas like offices; PAN covers personal devices; MAN covers cities; WAN covers large areas like multiple cities.

2. Step 2: Match the company's need to network type

   Connecting offices in different cities requires a Wide Area Network (WAN).

3. Final Answer:

   Wide Area Network (WAN) -> Option D

4. Quick Check:

   Multiple cities = WAN [OK]

Hint: Use WAN for networks across cities or countries [OK]

Common Mistakes:

• Choosing LAN for multi-city connections
• Confusing MAN with WAN
• Selecting PAN for office networks