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ASSIGNMENT DRIVE SPRING 2018
PROGRAM Bachelor of Computer
Application - BCA
SEMESTER 4
SUBJECT CODE & NAME BCA411 –
COMPUTER NETWORKING
Set -1
Q
1 Explain the tasks of different layers of OSI reference model? 10
Answer:-
The
tasks of different layers of OSI reference model are:
1. Physical Layer: This layer coordinates the
functions required to carry a bit stream over a physical medium. It deals with
the electrical and mechanical specifications of the interface and transmission
medium. It defines the procedures and functions that physical devices and
interfaces have to
Q2
What is Attenuation Distortion? 10
Answer:-
Attenuation distortion It is the loss of energy as
the signal propagates outward. The amount of energy depends on the frequency.
If the attenuation is too much, the receiver may not be able to detect the
Q3
Write a note on Slotted or Impure ALOHA. 10
Answer:-
Slotted
or Impure ALOHA:
An improvement to the original Aloha protocol was
Slotted Aloha. It is in 1972 Roberts published a method to double the
throughput of a pure ALOHA by using discrete timeslots. His proposal
Set -2
Q
1 Write the working principle of Stop-and-Wait ARQ. 10
Answer:-
This protocol adds a simple error control mechanism
to the stop-and-wait protocol. To detect and correct corrupted frames, we need
to add redundancy bits to our data frame. When the frame arrives at the receiver
site, it is checked and if it is corrupted, it is silently discarded. The
detection of errors in this protocol is manifested by the silence of the
receiver. Lost frames are more
Q2
What is Fragmentation in IPV6? 10
Answer:-
In IPV4, if a router receives a packet that is too
large for the network segment to which the packet is being forwarded and
fragmentation of the packet is allowed, IPV4 on the router fragments the
original packet into smaller packets that fit on the forwarding network segment.
In IPV6, only the
Q3
How SMTP works? 10
Answer:-
SMTP is based on end-to-end delivery: An SMTP client
contacts the destination host's SMTP server directly, on well-known port 25, to
deliver the mail. It keeps the mail item being transmitted until it has been
successfully copied to the recipient's SMTP. This is different from the
store-and-
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ASSIGNMENT DRIVE SPRING 2018
PROGRAM Bachelor of Computer
Application – BCA
SEMESTER 4
SUBJECT CODE & NAME BCA412 –
Java Programming
Set -1
Q
1 What are the rules for naming variables in JAVA? 10
Answer:-
A program refers to a variable using its name.
Certain rules and conventions govern the naming of
Q2
What is Operator Precedence in JAVA? 10
Answer:-
When more than one operator is used in an
expression, Java will use operator precedence rule to determine the order in
which the operators will be evaluated. For example, consider the following
Q3
What is abstract class? Explain. 10
Answer:-
An abstract class defines common properties and
behaviors of other classes. An abstract class is used as a base class to derive
specific classes of the same kind. It defines properties common to the classes
derived from it. The abstract keyword is used to declare such a class. The
classes declared
Set -2
Q1 What are the use of Readers and Writers
class in JAVA? 10
Answer:-
The subclasses of the input and output streams read
and write data in the form of bytes. The Reader and Writer classes are abstract
classes that support the reading and writing of Unicode character streams.
Unicode is used to represents data such that each character is represented by
16 bits. Byte streams work on eight bits of data. These 16-bit version streams
are called Reader and Writer. The
Q2
What are use of Adapter Classes in JAVA? 10
Answer:-
The Java programming language provides adapter
classes that implement the corresponding listener interfaces
Q3
Write a note on Remote Method Invocation. 10
Answer:-
Distributed applications are applications that
execute across multiple host systems. Objects executing on one host system can
invoke the methods of objects on remote hosts. The remotely invoked methods
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ASSIGNMENT DRIVE SPRING 2018
PROGRAM Bachelor of Computer
Application – BCA
SEMESTER 4
SUBJECT CODE & NAME BCA413
–SYSTEM SOFTWARE
Set -1
Q1
What are the Phases of a language processor? 10
Answer:-
Analysis
phase:-
A language processor consists of two distinct
phases. They are analysis phase and synthesis phase.
To determine relevant information concerning a
statement in the source program, the analysis phase uses each component of the
source language specification. Thus, analysis of the source statement consists
of lexical,
Q2
What is single pass assembler? 10
Answer:-
In single pass assemblers, the entire translation of
assembly language program into object program is done in only one pass. The
source program is read only once. These are also called as ‘one pass
Q3
Write and explain the algorithm for pass 1 of a linking loader. 10
Answer:-
During Pass 1, the loader is concerned only with
Header and Define record types in the control sections. Algorithm for Pass 1 of a Linking loader:
Set -2
Q1
What is the purpose of Lexical Analyzer? 10
Answer:-
The lexical analyzer is the interface between the
source program and the compiler. The lexical analyzer reads the source program
one character at a time, carving the source program into a sequence of atomic
Q2
What are the different types of editor? 10
Answer:-
Depending upon the types of characters to be edited,
editors can be broadly classified as:
i) Text Editors and
ii) Graphical Editor
.
Q3
Write a note on UPnP architecture. 10
Answer:-
The UPnP architecture is designed to offer pervasive
peer-to-peer network connectivity of networked devices such as Personal
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ASSIGNMENT DRIVE SPRING 2018
PROGRAM Bachelor of Computer
Application – BCA
SEMESTER 4
SUBJECT CODE & NAME BCA 414 –
PRINCIPLES OF FINANCIAL ACCOUNTING AND MANAGEMENT
Set -1
Q1
What are the different types of Journals? 10
Answer:-
The
different types of Journals are:
a)
Purchases Day Book
It records
credit purchase of raw materials (in case of a manufacturing concern), or of
goods traded (in case of trading concern).
b)
Sales Day Book
It records
credit
Q2
What are the activities of Finance Manager? 10
Answer:-
The
activities of a Finance Manager can include the following:
® Investment
or long term asset mix structure
® Financing
or
Q3
What are the concepts of Working Capita? Explain. 10
Answer:-
There are two concepts of working capita – gross and
net.
Gross working capital refers to the firm’s
investment in total current assets.
Net working capital
Set -2
Q1
What are the significant factors affecting the composition of working capital?
10
Answer:-
The significant factors affecting the composition of
working capital are:-
Nature
of Business: Working capital requirements are
basically influenced by the nature of business. Trading organizations
Q2
Explain the steps in preparation of fund flow statement. 10
Answer:-
Steps in preparation of fund flow statement:
1. Preparation of schedule changes in working
capital (taking current items only).
Q3
What are the characteristics of fixed and variable cost? 5+5
Answer:-
Fixed
Cost:
It is that portion of
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