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Assignment
| DRIVE | SUMMER, 2015 |
| PROGRAM | BSCNT |
| SEMESTER | 2 |
| SEMESTER CODE & NAME | BNT203-INTERNETWORKING WITH TCP/IP |
| BK ID | B1008 |
| CREDIT | 4 |
| MARKS | 60 |
Note: Answer all questions. Kindly note that answers for 10 marks questions should be approximately of 400 words. Each question is followed by evaluation scheme.
1 Discuss the functions of the following Layers:
- a) Transport layer.
Answer: In computer networking, a transport layer provides end-to-end or host-to-host communication services for applications within a layered architecture of network components and protocols. The transport layer provides services such as connection-oriented data stream support, reliability, flow control, and multiplexing.
Transport layer
- b) Network Interface Layer.
Answer: The bottommost layer of the Internet protocol suite (TCP/IP) is the Network Interface Layer. It defines the software and hardware used to carry TCP/IP traffic across an underlying network technology.
Examples include:
- Network Interface Layer
2 Brief the following
- ISDN
Answer: Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. It was first defined in 1988 in the CCITT red book.Prior to ISDN, the telephone system was viewed as a way to transport voice, with some special services available for data. The key
- X.25
Answer: X.25 is an ITU-T standard protocol suite for packet switched wide area network (WAN) communication. An X.25 WAN consists of packet-switching exchange (PSE) nodes as the networking hardware, and leased lines, plain old telephone service connections or ISDN connections as physical links. X.25 is a family of protocols that was popular during the 1980s with telecommunications companies and in
3 What are congestion? Mention two algorithms to overcome congestion.
Answer: Congestion, in the context of networks, refers to a network state where a node or link carries so much data that it may deteriorate network service quality, resulting in queuing delay, frame or data packet loss and the blocking of new connections. In a congested network, response time slows with reduced network throughput. Congestion occurs when bandwidth is insufficient and network data traffic exceeds capacity.
4 Differentiate between permanent and transient host groups.
Answer: IP multicasting is defined as the transmission of an IP datagram to a “host group”, a set of zero or more hosts identified by a single IP destination address. A multicast datagram is delivered to all members of its destination host group with
5 What is domain name resolution? Discuss the domain name resolution process.
Answer: Domain Name Resolution is the task of converting domain names to their corresponding IP address. This is all done behind the scenes and is rarely noticed by the user. When you enter a domain name in an application that uses the Internet, the application will issue a command to have the operating system convert the domain name into
6 Differentiate between Simple Mail Transfer Protocol and Post Office Protocol.
Answer: SMTP has always been very reliable. Since its invention in the eighties, all emails are usually delivered to the receiver without encountering problems. This is why SMTP has become the standard for the transfer of the bulk of emails on the Internet. It is mainly used for outgoing email transport and makes use of the TCPport 25. SMTP is used by MTA or the Mail Transfer Agent.
Still, SMTP was not safe from technicalities such as different issues for a lot of present users. One of the problems is the unavailability of a verification service for the sender of the mail. This was not a big problem during its invention because the Internet
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
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