Internet Protocols Quiz

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Questions and Answers

Which layer is responsible for reliable transmission of data?

Application Layer

Transport Layer (correct)

Link Layer

Internet Layer

What is the primary function of Internet Protocol (IP)?

Ensure reliable delivery of packets

Establish a socket for communication

Provide physical links between computers

Route packets across networks (correct)

What occurs when a packet drops during transmission?

The source TCP resends the packet (correct)

The packet is automatically discarded

The destination TCP acknowledges the loss

The communication session is terminated

Which protocol is used by email services?

Simple Mail Transfer Protocol (SMTP) Signup and view all the answers

Which layer is primarily responsible for routing data from network to network?

Internet layer Signup and view all the answers

During data transmission, which direction does data flow after a user requests a web page?

From Application layer through Transport and Internet layers Signup and view all the answers

What is the purpose of the handshake performed by TCP?

To open a communication socket Signup and view all the answers

What is the role of the Link and Physical layers in data transmission?

Move bits from computer to computer on LAN Signup and view all the answers

During data transmission, which layers collaborate to send data through the Internet?

Transport and Internet layers Signup and view all the answers

Which layer does a user interact with directly?

Application Layer Signup and view all the answers

In the example provided, how long did it take for the webpage to appear after the request?

40ms Signup and view all the answers

What type of transmission does Transmission Control Protocol (TCP) provide?

Reliable transmission Signup and view all the answers

Where is the physical location of the Wikipedia servers mentioned in the example?

Ashburn, Virginia Signup and view all the answers

Which of the following is NOT a layer in the TCP/IP model?

Session Layer Signup and view all the answers

Which statement addresses the relationship between geographical location and data latency?

Latency increases with physical distance between computers. Signup and view all the answers

What happens within the destination computer after data transmission is completed?

Data flows up to the Application layer. Signup and view all the answers

What factors contribute to data transmission latency?

Physical distance and routing paths Signup and view all the answers

In data flow, which layer handles user requests?

Application layer Signup and view all the answers

Study Notes

Internet Abstraction Layer Structure

The Internet is organized into layers, allowing direct interaction only between adjacent layers.
Users interact with the Application layer, which governs various protocols.

Application Layer Protocols

Email transmission utilizes Simple Mail Transfer Protocol (SMTP).
Web communication relies on HyperText Transfer Protocol (HTTP).

Transport and Internet Layer Protocols

Transmission Control Protocol (TCP) ensures reliable data transmission, used for email and web applications.
TCP orders packets, checks for transmission errors, and performs acknowledgments for successful packet delivery.
Internet Protocol (IP) provides unreliable transmission, routing packets via IP addresses across networks.

Physical Layer Protocols

Ethernet Protocol and Wi-Fi Protocol manage physical connections between computers.

TCP/IP Model

The TCP/IP model consists of four layers of protocols: Application, Transport, Internet, and Link.
TCP establishes a socket for communication, keeping it open throughout data transfer.
Source TCP converts data into packets for delivery to destination TCP.

Data Flow Process

Data flow begins at the Application layer of source computer A and moves down to the Transport and Internet layers.
A web page request sends data to the server (Computer B) via various layers.

Transmission Steps

Data moves across the Local Area Network (LAN) to a router.
The Internet layer routes data between networks, while Link and Physical layers handle transfer of bits from computer to computer.

Data Reception and Processing

Upon reaching the destination computer, data flows up to the Application layer for processing.
For example, a Wikipedia request took roughly 40 milliseconds to complete, with servers located in Ashburn, Virginia.

Latency Considerations

The geographical location of computers can impact data transmission latency.
Data transfer speed may depend on the physical distance between source and destination.

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Description

Test your knowledge on the structure of the Internet abstraction layer and its various protocols. This quiz covers Application, Transport, Internet, and Physical layer protocols, including SMTP, HTTP, TCP, and IP. Challenge yourself with questions about how these protocols work and interact with each other.