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Winter
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
Q2.
Describe about DWDM. Explain the components of a basic DWDM system 10
Answer: Dense Wavelength
Division Multiplexing (DWDM): In
previous unit we discussed about WDM (Wavelength Division Multiplexing). It is conceptually
similar to frequency division multiplexing. Only difference is, it is purposefully designed for
fibre-optic cable to support high
data-rate. In the literature, the term dense WDM (DWDM) is often used. This term does not imply a different
technology to that used for WDM. In fact,
the two terms are used
Q3.
Describe about Peak cell rate (PCR) and Sustained cell rate (SCR). 10
Answer: Peak cell rate (PCR): This is the maximum amount of traffic
that can be submitted by a source to an ATM network, and is expressed as
ATM cells per second. Due to the fact the transmission speeds are
expressed in bits per second. It is more convenient to talk about the
peak bit rate of a source, i.e., the maximum number of bits per second
submitted to an ATM connection, rather than its peak cell rate. The peak
bit rate can be translated to the peak cell
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
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 was considered to be
useful, but not something to be protected. When computer applications
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
Get fully solved assignment. Buy online from website
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or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
Charges rs
125/subject and rs 625/semester only.
if urgent then call us
on 08791490301, 08273413412
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