INTERNAL ASSIGNMENTS
| SESSION | JUL/AUG 2021 |
| PROGRAM | MCA |
| SEMESTER | II |
| COURSE CODE & NAME | DCA6204 & ADVANCED COMPUTER NETWORKS |
SET-I
Q1. Discuss the functions of layers of OSI model and compare it with TCP/IP model. 5+5 10
Ans:
OSI model: The Open Systems Interconnection (OSI) reference model was defined by the International Standards Organization (ISO) as a first step towards international standardization. In 1995, it was revised and known as ISO OSI (Open System Interconnection) because it deals with systems that are open for communication with other system. The model has seven layers. They are: physical layer, data link layer, network layer, transport layer,
Its Half solved only
Buy Complete from our online store
MUJ Fully solved assignment available for session Jul/Aug 2021,
Lowest price guarantee with quality.
Charges INR 200 only per assignment. For more information you can get via mail or Whats app also
Mail id is aapkieducation@gmail.com
Our website www.smuassignment.in
After mail, we will reply you instant or maximum
1 hour.
Otherwise you can also contact on our
whatsapp no 8791490301.
Contact no is +91 87-55555-879
Q2. Compare Circuit and Packet Switching with example. Describe some SONET/SDH devices. 5+5 10
Ans (2).
Circuit switching: Circuit switching assures dedicated communication link between two stations. Usually this types of networks consists a set of switches connected by a sequence of links. On each physical link, a logical channel is dedicated to the connections. And each link is divided into n channels by using different multiplexing techniques. Circuit switching method follows three steps for a successful communication. These are: circuit establishment
Q3. Explain the data transfer steps of Frame Relay call control. Explain TCP retransmission strategy. 5+5 10
Ans:
Call control: As we have seen frame relay supports multiple connection over the single line and these connection are called data link connection. For each connection there exist a unique DLIC (Data link Connection Identifier).
Following steps are
SET-II
Q4. What are the differences between dynamic routes and static routes, explain with example? Explain the functioning of the Open Shortest Path First (OSPF) protocol. 5+5 10
Ans:
Dynamic Routes: Dynamic routes are typically learned by the routing protocols RIP, OSPF and BGP. Routers that use the routing protocols exchange information in their routing tables by advertising. Using dynamic routes, the
Q5. Discuss the problems of symmetric key cryptography, discuss with suitable example. Explain RSA technique with an example. 5+5 10
Ans:
Q6. Explain single and multi-server queues. What is feedback mechanism for preventing network congestion and discus feedback information? 5+5 10
Ans:
Single server queue: The important element in a single server queue is the server, which provides services to packets. Different packets arrive at the system to be served. If the server is idle at the time of packet arrival, the packet is served immediately. Otherwise arriving packets enter into a waiting queue. When the server completes serving a