BT0076, TCP/IP

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PROGRAM	BSc IT
SEMESTER	THIRD
SUBJECT CODE & NAME	BT0076, TCP/IP
CREDIT	4
BK ID	B0965
MAX. MARKS	60

Q. 1. Draw the diagram of TCP/IP protocol suit. Explain networkinterface layer and Internet layer.

Answer:Understanding the intricacies of how computers interact is an important part of networking and is of equal interest to a sysadmin as well as to a developer. In this article, we will make an attempt to discuss the concept of communication from the very basic fundamental level that needs to be understood by everybody.

TCP/IP PROTOCOL SUITE

Communications between computers on a network is done through protocol suits. The most widely used and most widely available protocol suite is TCP/IP protocol suite. A protocol suit consists of a layered architecture where each layer depicts some func

Q. 2. What do you mean by frame relay? Describe the frame relayframe format with diagram.

Answer: Frame relay began as a stripped-down version of the X.25 protocol, releasing itself from the error-correcting burden most commonly associated with X.25. When frame relay detects an error, it simply drops the offending packet. Frame relay uses the concept of shared access and relies on a technique referred to as "best-effort", whereby error-correction practically does not exist and practically no guarantee of reliable data delivery occurs. Frame relay provides an industry-standard encapsulation, utilizing the strengths of high-speed, packet-switched technology able to service multiple virtual circuits and protocols between connected devices, such as two router

Q. 3. Define ports and explain the two types of ports.

Answer:A parallel port is an interface allowing a personal computer (PC) to transmit or receive data down multiple bundled cables to a peripheral device such as a printer. The most common parallel port is a printer port known as the Centronics port. A parallel port has multiple connectors and in theory allows data to be sent simultaneously down several cables at once. Later versions allow bi-directional communications. This technology is still used today for low-data-rate communications such as dot-matrix printing.

The standard for the bi-directional version of a para

Q. 4. What do you mean by Telnet? Describe Telnet operation.

Answer:Telnet’s overall function is to define a means by which a user or process on one machine can access and use another machine as if it were locally connected. This makes Telnet inherently client/server in operation, like so many other application protocols in TCP/IP. Usually, the Telnet client is a piece of software that acts as an interface to the user, processing keystrokes and user commands and presenting output from the remote machine. The Telnet server is a program running on a remote computer that has been set up to allow remote sessions.

Q. 5. Define and explain Internet Message Access Protocol (IMAP4).

Describe Fundamental IMAP4 Electronic Mail Models.

Answer: IMAP (Internet Message Access Protocol) is a standard protocol for accessing e-mail from your local server. IMAP (the latest version is IMAP Version 4) is a client/server protocol in which e-mail is received and held for you by your Internet server. You (or your e-mail client) can view just the heading and the sender of the letter and then decide whether to download the mail. You can also create and manipulate multiple folders or mailboxes on the server

Q. 6. Draw and explain SNMP message format.

Answer: The communication of management information is accomplished through the exchange of SNMP messages that contain protocol data units (PDUs). Like the messages of most TCP/IP protocols, these PDUs are designed to use a particular field format, and are created, addressed and transported according to specific protocol rules. SNMP messages include fields that control the operation of the protocol, and carry a “payload” of management information in the form of Management Information Base (MIB) objects.  In this section I describe

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