Introduction to Internet Architecture and Protocols

Computer Networks

This content provides an introduction to computer networks, internet architecture, and the TCP/IP protocol suite. It details the functions of each layer in the TCP/IP model, compares various protocols like TCP, UDP, HTTP, FTP, SMTP, and ICMP, and discusses their real-world applications.

Networking Protocols Internet TCP/IP

30 Questions Medium Ages 12+ Mar 4, 2026

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About this Study Set

This study set covers Computer Networks through 30 practice questions. This content provides an introduction to computer networks, internet architecture, and the TCP/IP protocol suite. It details the functions of each layer in the TCP/IP model, compares various protocols like TCP, UDP, HTTP, FTP, SMTP, and ICMP, and discusses their real-world applications. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 30 questions from the Introduction to Internet Architecture and Protocols study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is a computer network?

A A system of interconnected computers that can share resources and data.
B A single computer with internet access.
C A group of routers and switches.
D A wired communication channel.

2 Which of the following are components of a computer network?

A Nodes and Links
B Servers and Clients
C Routers and Switches
D Wired and Wireless channels.

3 What does LAN stand for?

A Local Area Network
B Large Area Network
C Logical Access Network
D Limited Access Network.

4 Which of the following is NOT a benefit of computer networks?

A Increased hardware costs
B Resource sharing
C Communication
D Access to remote data.

5 How is data transferred across the internet according to the basic working principle?

A Data is broken into packets, sent, and reassembled.
B Data is sent as a continuous stream.
C Data is encrypted and then sent.
D Data is transferred directly from source to destination.

6 How many layers are in the OSI Model?

A 7
B 4
C 5
D 3.

7 How many layers are in the TCP/IP Model?

A 4
B 7
C 5
D 3.

8 Which layer in the TCP/IP model provides network services directly to applications?

A Application Layer
B Transport Layer
C Internet Layer
D Link Layer.

9 Which protocol is responsible for ensuring reliable data transfer in the TCP/IP model?

A TCP
B UDP
C IP
D HTTP.

10 What is the primary function of the Internet Layer in the TCP/IP model?

A Packet routing across networks
B Providing network services to applications
C Ensuring reliable end-to-end communication
D Physical transmission of data.

11 Which layer in the TCP/IP model deals with the physical transmission of data between devices on the same network?

A Link Layer
B Application Layer
C Transport Layer
D Internet Layer.

12 Which devices are typically responsible for the Internet Layer in the TCP/IP model?

A Routers
B Servers
C PCs
D Modems.

13 What protocol is used for domain name resolution in the TCP/IP suite?

A DNS
B HTTP
C FTP
D SMTP.

14 During TCP/IP data transfer, what happens at the Transport Layer?

A Segmentation and sequencing via TCP/UDP
B Packet routing
C Framing and transmission
D Data generation.

15 What is the purpose of the 'ping' command?

A To show round-trip time of packets and confirm connectivity.
B To transfer files between computers.
C To send emails.
D To browse websites.

16 What is a network protocol?

A A set of rules and conventions for communication between network devices.
B A physical cable connecting devices.
C A type of network hardware.
D A software application.

17 Which of the following is an example of a communication protocol?

A TCP
B HTTP
C DNS
D FTP.

18 TCP is described as being:

A Connection-Oriented
B Connectionless
C Stateless
D Unreliable.

19 UDP is described as being:

A Connectionless
B Connection-Oriented
C Reliable
D Flow Controlled.

20 Which protocol is primarily used for transferring web pages?

A HTTP
B FTP
C SMTP
D DNS.

21 Which protocol is used for transferring files over a network?

A FTP
B HTTP
C SMTP
D ICMP.

22 Which protocol is used for sending email between servers?

A SMTP
B HTTP
C FTP
D DNS.

23 Which protocol is used for error messages and diagnostics?

A ICMP
B TCP
C UDP
D HTTP.

24 What is a key characteristic of TCP compared to UDP?

A Reliability
B Speed
C Lower overhead
D Connectionless operation.

25 What is a key characteristic of UDP compared to TCP?

A Speed
B Reliability
C Connection-oriented operation
D Flow control.

26 HTTP uses which transport layer protocol for reliable data transfer?

A TCP
B UDP
C IP
D ARP.

27 FTP uses separate channels for which two functions?

A Commands and file transfer
B Sending and receiving
C User authentication and data encryption
D Request and response.

28 What is a common use case for DNS?

A Resolving domain names to IP addresses
B Sending email
C Transferring files
D Browsing websites.

29 Which protocol operates at the network layer in the TCP/IP model and is used for diagnostics like Ping?

A ICMP
B TCP
C UDP
D HTTP.

30 How does Dropbox utilize the TCP/IP layers for its functionality?

A Uses TCP for reliable file transfers and sync accuracy.
B Relies on UDP for all data transfers.
C Only uses the Application Layer for all operations.
D Primarily uses the Link Layer for data creation.

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