TCP/IP Transport Layer

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What is the primary purpose of TCP?

To deliver datagrams between applications

To provide a best-effort delivery protocol

To establish a connection between the sender and the receiver only

To provide reliability and flow control (correct)

What is the main difference between TCP and UDP?

TCP is a best-effort delivery protocol, while UDP is a reliable protocol

TCP is a stateless protocol, while UDP is a stateful protocol

TCP is a connection-oriented protocol, while UDP is a connectionless protocol (correct)

TCP is a connectionless protocol, while UDP is a connection-oriented protocol

What is the term used to describe UDP's delivery method?

Best-effort delivery (correct)

Flow-controlled delivery

Reliable delivery

Connection-oriented delivery

What is the purpose of sequencing data in TCP?

To ensure data is delivered in a specific order Signup and view all the answers

What is the term used to describe TCP's ability to track information sent or received between the client and server?

Stateful protocol Signup and view all the answers

What happens if data is not acknowledged in TCP after a certain amount of time?

The data is retransmitted Signup and view all the answers

What is the primary advantage of UDP?

It has very little overhead and data checking Signup and view all the answers

Why is TCP known as a connection-oriented protocol?

Because it requires an established connection between the sender and the receiver Signup and view all the answers

What is the source port number associated with?

The originating application on the local host Signup and view all the answers

What is the purpose of a socket?

All of the above Signup and view all the answers

What is the range of well-known port numbers?

0 to 1,023 Signup and view all the answers

What is the purpose of well-known port numbers?

To enable clients to easily identify the associated service required Signup and view all the answers

What type of port numbers are assigned by IANA to a requesting entity?

Registered port numbers Signup and view all the answers

What is the purpose of registered port numbers?

To allow individual applications to receive a unique port number Signup and view all the answers

Where are the source and destination ports placed within the packet?

Within the segment Signup and view all the answers

What is the combination of the source IP address and source port number known as?

A socket Signup and view all the answers

What is the purpose of the netstat command?

To verify connections and identify security threats Signup and view all the answers

Which protocol uses port number 21?

File Transfer Protocol (FTP) - Control Signup and view all the answers

What is the range of ephemeral ports?

1024-49151 Signup and view all the answers

Which protocol uses port number 443?

Hypertext Transfer Protocol Secure (HTTPS) Signup and view all the answers

What is the purpose of the well-known port number 53?

Domain Name Service (DNS) Signup and view all the answers

Which port number is registered by Cisco for RADIUS server authentication?

1812 Signup and view all the answers

Which protocol uses port number 23?

Secure Shell (SSH) Signup and view all the answers

Who assigns port numbers dynamically when a connection is initiated?

The client's OS Signup and view all the answers

What is the purpose of flow control in TCP?

To adjust the rate of data flow between source and destination. Signup and view all the answers

What happens when congestion occurs on a network?

Packets are discarded by the overloaded router. Signup and view all the answers

What is the typical Maximum Segment Size (MSS) when using IPv4?

1460 bytes Signup and view all the answers

What is the primary benefit of UDP in terms of overhead?

Low overhead Signup and view all the answers

How does TCP handle congestion?

By employing several congestion handling mechanisms, timers, and algorithms. Signup and view all the answers

What is the significance of the Ethernet maximum transmission unit (MTU)?

It determines the Maximum Segment Size. Signup and view all the answers

What is the advantage of using UDP over TCP?

Low overhead Signup and view all the answers

What is the purpose of Selective ACK (SACK) in TCP?

To explicitly acknowledge which segments were received, including discontinuous segments Signup and view all the answers

What is the state of the TCP connections in the netstat output?

ESTABLISHED Signup and view all the answers

What is the purpose of the port number in TCP communication?

To identify the specific server process or application Signup and view all the answers

What occurs when a server application is assigned to a specific port?

The server becomes open and accepting connections Signup and view all the answers

What does the FIN flag indicate in a TCP segment?

The end of a data stream Signup and view all the answers

What is the third step in the TCP connection establishment process?

The client acknowledges the server Signup and view all the answers

What happens when an individual server cannot have two services assigned to the same port number?

The server does not allow multiple services Signup and view all the answers

What is the role of the transport layer in TCP communication?

To accept and process segments addressed to a port Signup and view all the answers

What is the purpose of the netstat command?

To display active connections and port numbers Signup and view all the answers

TCP/IP Transport Layer

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Questions and Answers

What is the primary purpose of TCP?

What is the main difference between TCP and UDP?

What is the term used to describe UDP's delivery method?

What is the purpose of sequencing data in TCP?

What is the term used to describe TCP's ability to track information sent or received between the client and server?

What happens if data is not acknowledged in TCP after a certain amount of time?

What is the primary advantage of UDP?

Why is TCP known as a connection-oriented protocol?

What is the source port number associated with?

What is the purpose of a socket?

What is the range of well-known port numbers?

What is the purpose of well-known port numbers?

What type of port numbers are assigned by IANA to a requesting entity?

What is the purpose of registered port numbers?

Where are the source and destination ports placed within the packet?

What is the combination of the source IP address and source port number known as?

What is the purpose of the netstat command?

Which protocol uses port number 21?

What is the range of ephemeral ports?

Which protocol uses port number 443?

What is the purpose of the well-known port number 53?

Which port number is registered by Cisco for RADIUS server authentication?

Which protocol uses port number 23?

Who assigns port numbers dynamically when a connection is initiated?

What is the purpose of flow control in TCP?

What happens when congestion occurs on a network?

What is the typical Maximum Segment Size (MSS) when using IPv4?

What is the primary benefit of UDP in terms of overhead?

How does TCP handle congestion?

What is the significance of the Ethernet maximum transmission unit (MTU)?

What is the advantage of using UDP over TCP?

What is the purpose of Selective ACK (SACK) in TCP?

What is the state of the TCP connections in the netstat output?

What is the purpose of the port number in TCP communication?

What occurs when a server application is assigned to a specific port?

What does the FIN flag indicate in a TCP segment?

What is the third step in the TCP connection establishment process?

What happens when an individual server cannot have two services assigned to the same port number?

What is the role of the transport layer in TCP communication?

What is the purpose of the netstat command?

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