MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The most significant protocol at layer 3 (also called the network layer) is the Internet Protocol, or IP. IP is the standard for routing packets across interconnected networks–hence, the name internet.

Detailed explanation-2: -Layer 2 is the Data Link Layer. It contains protocols that manage the movement of data around a local network, with issues such as device addressing and data frame layout. Internet issues, such as IP addresses are at Layer 3, which is called the Network Layer.

Detailed explanation-3: -In the OSI model the transport layer is most often referred to as Layer 4 or L4, while numbered layers are not used in TCP/IP. The best-known transport protocol of TCP/IP is the Transmission Control Protocol (TCP), and lent its name to the title of the entire suite.

Detailed explanation-4: -The OSI model describes an idealized network communications with a family of protocols. TCP/IP does not correspond to this model directly. TCP/IP either combines several OSI layers into a single layer, or does not use certain layers at all.

Detailed explanation-5: -The TCP/IP suite of protocols can be understood in terms of layers (or levels). This figure depicts the layers of the TCP/IP protocol. From the top they are, Application Layer, Transport Layer, Network Layer, Network Interface Layer, and Hardware. TCP/IP carefully defines how information moves from sender to receiver.