OSI Model vs TCP/IP

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What is the primary function of the demultiplexing field in a packet header?

To specify the packet's TTL value
To identify the right module for the next layer (correct)
To perform error-checking on the packet
To identify the source IP address

Which of the following is a characteristic of the TCP/IP model?

It is based on a rigid OSI model
It has 7 layers similar to OSI
It is less rigid and flexible than OSI (correct)
It is used only for local area networks

What is the purpose of the network layer in the TCP/IP model?

To route packets between networks (correct)
To establish and manage connections
To provide error-checking and correction
To manage datagram segmentation

What is the primary difference between TCP and UDP protocols?

TCP is connection-oriented, UDP is connectionless (A) Signup and view all the answers

What is the function of a repeater or hub in a network?

To amplify or regenerate network signals (D) Signup and view all the answers

What is the purpose of multiplexing in network communication?

To allow multiple applications to share the same connection (B) Signup and view all the answers

What is the primary goal of layering in network functionality?

To provide a modular approach to implementing network functionality (A) Signup and view all the answers

What is a protocol in the context of network communication?

An abstract object or module in a layered structure that implements an agreement between parties on how communication should take place (A) Signup and view all the answers

What is a key advantage of using protocols in network communication?

Protocols allow for reuse and avoid re-writing of code (C) Signup and view all the answers

Why are protocols necessary for interoperability in networks?

Because networks are very heterogeneous and use different hardware and software (D) Signup and view all the answers

What is an example of layering in network communication?

The modular approach to implementing network functionality using multiple levels of abstraction (A) Signup and view all the answers

What is a key challenge in implementing layering in network communication?

Determining the right abstractions to use (C) Signup and view all the answers

What is the primary purpose of protocols in a network?

To provide a standardized way of communication (C) Signup and view all the answers

What is the primary function of the Network layer in the OSI model?

To route packets in a packet-switched network (B) Signup and view all the answers

What is the relationship between higher-level protocols and lower-level layers?

Higher-level protocols can run on multiple lower-level layers (A) Signup and view all the answers

What is the primary advantage of breaking down network functionality into layers?

To allow for easier modification and implementation of individual layers (D) Signup and view all the answers

What is the primary purpose of the OSI model?

To provide a reference model for ease of thinking and implementation (D) Signup and view all the answers

What type of communication is enabled by protocols and layers?

Both horizontal and vertical communication (B) Signup and view all the answers