Uttar Pradesh Technical University (UPTU) 2005 B.Tech Electronics and Communications Engineering data communication network - Question Paper

B.Tech.
8th Semester Examination,2005-2006
Data Communication Network(TEC-802)

Note:Attempt ALL ques..All ques. carry equal marks.

Q.1.Attempt any 4 parts of the following:

(a)Explain in brief various kinds of mediums for communication.

(b)What do you mean by Baud Rate?Explain in detail.

(c)Explain briefly Design problems for various layers.

(d)What are the differences ranging from Broadband and Baseband coaxial cable transmissionss mediums?

(e)What is the difference ranging from virtual and true communications?

(f)Explain 3 kinds of sliding window protocols.

Q.2.Attempt any 4 parts of the following:

(a)What do you understand by multiaccess channels?

(b)Explain key assumptions for dynamic channels allocations in LANs and MANs.

(c)What are the differences ranging from Pure ALOHA and slotted ALOHA?

(d)What do you understand by non-persistent CSMA?

(e)What do you understand by the Adaptive Tree Walk protocol?

(f)Describe the working principle of limited contention protocols.

Q.3.Attempt any 2 parts of the following:

(a)Explain in detail IEEE standards 802.3 and 802.5.

(b)Explain with the help of suitable diagram FDDI and also discuss its applications.

(c)Differentiate ranging from wired and wireless LAN.Explain the IEE standards used in it.

Q.4.Attempt any 2 parts of the following:

(a)What are the services given to the Transport Layer?Discuss in detail.Explain the methodology of Hierarchical routing.

(b)Explain in detail The Dijkstra's Algorithm for shortest path with the help of suitable diagrams.

(c)What is congestion?How is it controlled using token bucket as well as leaky bucket algorithms.


Q.5.Attempt any 2 parts of the following:

(a)Explain in detail The Transport Services given to upper layers.What do you understand by UDP?

(b)Discuss different elements of transport protocol in details.How addressing establishing and releasing connections are achieved in this layer?

(c)Write short notes on the following:
(1)Network security
(2)TCP/IP

Earning:   Approval pending.