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Fall 2014 ASSIGNMENT
PROGRAM MCA(REVISED FALL 2012)
SEMESTER THIRD
SUBJECT CODE & NAME MCA3050- ADVANCED COMPUTER NETWORKS
CREDIT 4 BK ID B1650 MAX. MARKS 60
Q. No. 1 Describe OSI Model. List and explain its seven layers. 3+7 10
Answer: 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, session layer, presentation layer
and
2 Explain briefly Broadband ISDN (B - ISDN). Describe B - ISDN services. 4+3*2 10
Answer:
Broadband ISDN
Broadband ISDN (B - ISDN) was addressed formally in 1988 through the first set of B - ISDN
standards from the ITU - T (I.121). Those standards were revised formally in 1990 and continue
3 Differentiate between Constant bit rate (CBR) and Real-Time Variable Bit Rate
(rt-VBR) 5+5 10
Answer:
Constant bit rate (CBR):
The CBR service category is used for connections that transport traffic at a constant bit rate,
where there is an inherent reliance on time synchronization between the traffic source and
Q4 Describe the following:
a) Open Shortest Path First (OSPF) protocol
b) Broader Gateway Routing Protocol (BGP) 5+5 10
Answer: a)
Open Shortest Path First (OSPF) protocol
OSPF is a commonly deployed link-state routing protocol. It views the Internet as a star
configuration. OSPF incorporates the following concepts to manage the complexity of large
internets.
Q5 Write short notes on:
a) Cryptography
b) Encryption
c) Decryption
d) Cryptanalysis
e) Cryptology 5*2 10
Answer: a) Cryptography
Most initial computer applications had no or at best, very little security. This continued for a
number of years and until the importance of data is truly realized. Until then, computer data
Q6 Differentiate between Single server queue and Multi-server queue 5+5 10
Answer:
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.
Get fully solved assignment, plz drop a mail with your sub code
computeroperator4@gmail.com
Charges for mba rs 125/subject and rs 700/semester only.
For other rs 125/subject only
if urgent then call us on 08791490301, 08273413412
our website is www.smuassignment.in