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Questions and Answers
Which of the following protocols is responsible for translation of human-friendly names for Internet end systems to a 32-bit network address?
Which of the following protocols is responsible for translation of human-friendly names for Internet end systems to a 32-bit network address?
What is the function of the transport layer in the Internet?
What is the function of the transport layer in the Internet?
Which of the following protocols provides a connection-oriented service to its applications?
Which of the following protocols provides a connection-oriented service to its applications?
What is the primary function of the application layer in the Internet?
What is the primary function of the application layer in the Internet?
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What is the characteristic of TCP protocol?
What is the characteristic of TCP protocol?
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Which of the following protocols is responsible for transferring files between two end systems?
Which of the following protocols is responsible for transferring files between two end systems?
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What is the packet of information at the application layer called?
What is the packet of information at the application layer called?
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Which of the following is a characteristic of the transport layer?
Which of the following is a characteristic of the transport layer?
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What is the function of the SMTP protocol?
What is the function of the SMTP protocol?
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What is the primary function of the HTTP protocol?
What is the primary function of the HTTP protocol?
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Study Notes
The Internet's Protocol Layers
- The Internet is a network of networks, and it has multiple layers, including the application layer, transport layer, network layer, and link layer.
Transport Layer
- The transport layer transports application-layer messages between application endpoints.
- There are two transport protocols in the Internet: TCP and UDP.
- TCP provides a connection-oriented service to its applications.
- TCP's service includes guaranteed delivery of application-layer messages to the destination and flow control (sender/receiver speed matching).
- UDP provides a connectionless service to its applications.
- UDP's service has no reliability, no flow control, and no congestion control.
Network Layer
- The Internet's network layer is responsible for moving network-layer packets (datagrams) from one host to another.
- The Internet's network layer includes the IP protocol, which defines the fields in the datagram and how the end systems and routers act on these fields.
- The Internet's network layer also contains routing protocols that determine the routes that datagrams take between sources and destinations.
- There is only one IP protocol, and all Internet components that have a network layer must run the IP protocol.
Link Layer
- The link layer moves packets from one node (host or router) to the next node in the route.
Internet Standards
- Internet standards are developed by the Internet Engineering Task Force (IETF).
- IETF standards documents are called requests for comments (RFCs).
- RFCs define protocols such as TCP, IP, HTTP, and SMTP.
Application Layer
- The application layer is where network applications and their application-layer protocols reside.
- The Internet's application layer includes many protocols, such as HTTP, SMTP, and FTP.
- The application layer also includes protocols that provide specific network functions, such as the domain name system (DNS).
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Description
This quiz covers the basics of computer networks, focusing on the transport layer and network layer, including TCP and UDP protocols.
