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PROGRAM-BCA
(REVISED FALL 2012)
SEMESTER-4
SUBJECT
CODE & NAME BCA 4030/IMC4030 -System Software
CREDIT-4
BK
ID-B1774
MAXIMUM
MARKS-60
Q1.
Define Language Processor and explain its activities in detail (2+8)
Answer.
Language
Processor
A language processor is
Software which bridges a specification or execution gap. The activity performed
by the language processor is called Language processing. The program which
inputs to the language processor is called source program and to its output as
the target program. The languages in which these programs are written are
Q2.
Describe the different types of Assemblers. (10)
Answer.
Types
of Assemblers
The assemblers can be of any one
of the following types:
1) Single pass assemblers
2) Two pass assemblers and
Q3.
Define a linker? Elaborate the various steps involved in the execution of a
program with the help of a diagram (2+8)
Answer.
Linker
Linker or link editor is a
program that takes one or more objects generated by compilers and assembles
them into a
Q4.
Explain the various phases of compiler with the help of a block diagram (10)
Answer.
Phases
of compiler with the help of a block diagram
A compiler takes as input a
source program and produces as output an equivalent sequence of machine
instructions. This process is so complex that it is not reasonable, either from
a logical point of view or from an implementation
Q5.
List and explain the various issues which must be considered to make your
drivers portable across CPU architectures (10)
Answer.
CPU issues that influence device
driver design
A device driver should be
designed so that it can accommodate peripheral devices to operate on more than
one CPU architecture. The following issues must be considered to make your
drivers portable across CPU architectures:
i. Control status register (CSR)
access
Q6.
What do you mean by a USB end point? Explain the types of an end point (2+8)
Answer.
USB
end point
It is through the endpoint that
the most basic form of USB communication happens. Endpoints are sources or sinks
of data. Endpoints occur at the end of the communications channel at the USB
function, as the bus is host centric. A USB endpoint carries data in one
direction only. If a data is carried from the host computer to the device then
it is
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