ISRO Scientist/Engineer SC Computer Science 2007 — ISRO Scientist/Engineer SC 2007 · Computer Science
Computer Science · 78 of 80 questions publicly available
Question 1 Q11555
The Boolean expression Y = (A + B' + A'B)C' is given by
- A.
AC'
- B.
BC'
- C.
C'
- D.
AB
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 2 Q11550
The circuit shown in the following figure realizes the function
- A.
(( A + B )' +C ) ( D'E' )
- B.
(( A + B )' + C ) ( DE' )
- C.
( A + ( B + C )' ) ( D'E )
- D.
( A + B + C' ) ( D'E' )
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 3 Q11556
The circuit shown in the given figure is a
- A.
Full adder
- B.
Full subtractor
- C.
Shift register
- D.
Decade counter
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 4 Q11557
When two numbers are added in excess-3 code and the sum is less than 9, then in order to get the correct answer it is necessary to
- A.
subtract 0011 from the sum
- B.
add 0011 to the sum
- C.
subtract 0110 from the sum
- D.
add 0110 to the sum
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 5 Q11558
The characteristic equation of an SR flip-flop is given by
- A.
Qn+1 = S + RQn
- B.
Qₙ₊₁ = R̅Q̅ₙ + S̅Qₙ
- C.
Qn+1= S' + RQn
- D.
Qn+1 = S + R'Qn
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 6 Q11563
A graph with n vertices and n-1 edges that is not a tree, is
- A.
Connected
- B.
Disconnected
- C.
Euler
- D.
A circuit
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 7 Q11564
If a graph requires k different colours for its proper colouring, then the chromatic number of the graph is
- A.
1
- B.
k
- C.
k-1
- D.
k/2
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 8 Q11536
A ready bit can be read
- A.
and written by CPU
- B.
and written by peripheral
- C.
by peripheral and written by CPU
- D.
by CPU and written by the peripheral
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 9 Q69615
Let J = [[a, 1], [0, a]]. For a positive integer n, which matrix equals Jⁿ?
- A.
![Matrix [[a^n, 1], [0, a^n]].](https://cdn.knowledgegate.ai/question-images/question_image_1780505892868_sdts9y.jpg)
- B.
![Matrix [[a^n, n], [0, a^n]].](https://cdn.knowledgegate.ai/question-images/question_image_1780505916707_dg7ero.jpg)
- C.
![Matrix [[a^n, n a^(n−1)], [0, a^n]].](https://cdn.knowledgegate.ai/question-images/question_image_1780505926933_qi0om1.jpg)
- D.
![Matrix [[a^n, n a^(n−1)], [−n, a^n]].](https://cdn.knowledgegate.ai/question-images/question_image_1780505953595_j78227.jpg)
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 10 Q11535
The term ‘aging’ refers to
- A.
booting up the priority of the process in multi-level of queue without feedback.
- B.
gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking
- C.
keeping track of the following a page has been in memory for the purpose of LRU replacement
- D.
letting job reside in memory for a certain amount of time so that the number of pages required can be estimated accurately.
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 11 Q11519
Consider a set of n tasks with known runtimes r1, r2....rn to be run on a uniprocessor machine. Which of the following processor scheduling algorithms will result in the maximum throughput?
- A.
Round Robin
- B.
Shortest job first
- C.
Highest response ratio next
- D.
first cum first served
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 12 Q11529
Consider a job scheduling problem with 4 jobs J1, J2, J3, J4 and with corresponding deadlines: ( d1, d2, d3, d4) = (4, 2, 4, 2). Which of the following is not a feasible schedule without violating any job's deadline?
- A.
J2, J4, J1, J3
- B.
J4, J1, J2, J3
- C.
J4, J2, J1, J3
- D.
J4, J2, J3, J1
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 13 Q11591
By using an eight bit optical encoder the degree of resolution that can be obtained is (approximately)
- A.
1.8o
- B.
3.4o
- C.
2.8o
- D.
1.4o
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 14 Q11534
The principal of the locality of reference justifies the use of
- A.
virtual memory
- B.
interrupts
- C.
main memory
- D.
cache memory
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 15 Q11586
Consider the following pseudo-code
x:=1;
i:=1;
while (x <= 1000)
begin
x:=2^x;
i:=i+1;
end;What is the value of i at the end of the pseudo-code?
- A.
4
- B.
5
- C.
6
- D.
7
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 16 Q70310
The five items: A, B, C, D, and E are pushed in a stack, one after the other starting from A. The stack is popped four times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. Now one item is popped from the stack. The popped item is
- A.
A
- B.
B
- C.
C
- D.
D
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 17 Q70311
Round Robin scheduling is essentially the pre-emptive version of
- A.
FIFO
- B.
Shortest Job First
- C.
Shortest remaining time
- D.
Longest remaining time
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 18 Q11561
The number of digit 1 present in the binary representation of
3 × 512 + 7 × 64 + 5 × 8 + 3- A.
8
- B.
9
- C.
10
- D.
12
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 19 Q11606
Assume that each character code consists of 8 bits and the asynchronous serial line uses binary signaling, one start bit, two stop bits, and no parity bit. The number of complete characters that can be transmitted per second at 2400 baud is:
- A.
109
- B.
216
- C.
218
- D.
219
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 20 Q11562
If the bandwidth of a signal is 5 kHz and the lowest frequency is 52 kHz, what is the highest frequency?
- A.
5 kHz
- B.
10 kHz
- C.
47 kHz
- D.
57 kHz
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 21 Q11525
An Ethernet hub
- A.
functions as a repeater
- B.
connects to a digital PBX
- C.
connects to a token-ring network
- D.
functions as a gateway
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 22 Q11574
Phase transitions for each bit are used in:
- A.
Amplitude modulation
- B.
Carrier modulation
- C.
Manchester encoding
- D.
NRZ encoding
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 23 Q70315
Study the following programme
// precondition : x >= 0
public void demo(int x)
{
System.out.print(x % 10);
if( (x / 10) != 0 )
{
demo(x / 10);
}
System.out.print(x % 10);
}
Which of the following is printed as a result of the call demo (1234)?
- A.
1441
- B.
3443
- C.
12344321
- D.
43211234
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 24 Q12111
Bit stuffing refers to
- A.
inserting a \'0\' in user stream to differentiate it with a flag
- B.
inserting a \'0\' in flag stream to avoid ambiguity
- C.
appending a nibble to the flag sequence
- D.
Appending a nibble to the user data stream
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 25 Q11518
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
- A.
Partitioning
- B.
Multi-tasking
- C.
Windowing
- D.
Paging
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 26 Q11569
If there are five routers and six networks in intranet using link state routing, how many routing tables are there?
- A.
1
- B.
5
- C.
6
- D.
11
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 27 Q11530
Virtual memory is
- A.
Part of Main Memory only used for swapping
- B.
A technique to allow a program, of size more than the size of main memory, to run
- C.
Part of secondary storage used in program execution
- D.
None of these
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 29 Q11592
The set of all Equivalence Classes of a set A of Cardinality C
- A.
is of cardinality 2c
- B.
have the same cardinality as A
- C.
forms a partition of A
- D.
is of cardinality C2
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 30 Q11560
0.75 decimal system is equivalent to ____ in octal system
- A.
0.60
- B.
0.52
- C.
0.54
- D.
0.50
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 31 Q10632
In an SR latch made by cross-coupling two NAND gates, if both S and R inputs are set to 0, then it will result in
- A.
Q = 0, Q' = 1
- B.
Q = 1, Q' = 0
- C.
Q = 1, Q' = 1
- D.
Indeterminate states
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 32 Q10645
Identify the correct translation into logical notation of the following assertion.
"Some boys in the class are taller than all the girls" Note : taller(x,y) is true if x is taller than y.
- A.
(∃x) (boy(x) → (∀y) (girl(y) ∧ taller(x,y)))
- B.
(∃x) (boy(x) ∧ (∀y) (girl(y) ∧ taller(x,y)))
- C.
(∃x) (boy(x) → (∀y) (girl(y) → taller(x,y)))
- D.
(∃x) (boy(x) ∧ (∀y) (girl(y) → taller(x,y)))
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 33 Q11548
Company X shipped 5 computer chips, 1 of which was defective, and Company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at random from the 9 chips shipped by the companies. If the chosen chip is found to be defective, what is the probability that the chip came from Company Y?
- A.
2/9
- B.
4/9
- C.
2/3
- D.
1/2
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 34 Q11554
Ring counter is analogous to
- A.
Toggle Switch
- B.
Latch
- C.
Stepping Switch
- D.
S-R flip flop
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 35 Q11553
The output 0 and 1 level for TTL logic family is approximately
- A.
0.1 and 5V
- B.
0.6 and 3.5 V
- C.
0.9 and 1.75 V
- D.
-1.75 and 0.9 V
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 36 Q11552
Consider a computer system that stores floating-point numbers with 16-bit mantissa and an 8-bit exponent, each in two’s complement. The smallest and largest positive values which can be stored are
- A.
1 × 10^-128 and 2^15 × 10^128
- B.
1 × 10 -256and 215× 10255
- C.
1 × 10 -128and 215× 10127
- D.
1 × 10^-128 and (2^15 - 1) × 10^127
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 37 Q11566
In comparison with static RAM memory, the dynamic Ram memory has
- A.
lower bit density and higher power consumption
- B.
higher bit density and higher power consumption
- C.
lower bit density and lower power consumption
- D.
higher bit density and lower power consumption
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 38 Q11551
The Hexadecimal equivalent of 01111100110111100011 is
- A.
CD73E
- B.
ABD3F
- C.
7CDE3
- D.
FA4CD
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 39 Q11537
Disk requests are received by a disk drive for cylinder 5, 25, 18, 3, 39, 8 and 35 in that order. A seek takes 5 msec per cylinder moved. How much seek time is needed to serve these requests for a Shortest Seek First (SSF) algorithm? Assume that the arm is at cylinder 20 when the last of these requests is made with none of the requests yet served
- A.
125 msec
- B.
295 msec
- C.
575 msec
- D.
750 msec
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 40 Q12362
Consider a system having m resources of the same type. These resources are shared by 3 processes A, B, C which have peak time demands of 3, 4, 6 respectively. The minimum value of m that ensures deadlock will never occur is
- A.
11
- B.
12
- C.
13
- D.
14
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 41 Q11516
A task in a blocked state
- A.
is executable
- B.
is running
- C.
must still be placed in the run queues
- D.
is waiting for some temporarily unavailable resources
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 42 Q11533
Semaphores
- A.
synchronize critical resources to prevent deadlock
- B.
synchronize critical resources to prevent contention
- C.
are used to do I/O
- D.
are used for memory management
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 43 Q11521
On a system using non-preemptive scheduling, processes with expected run times of 5, 18, 9 and 12 are in the ready queue. In what order should they be run to minimize wait time?
- A.
5, 12, 9, 18
- B.
5, 9, 12, 18
- C.
12, 18, 9, 5
- D.
9, 12, 18, 5
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 44 Q60906
The number of page frames that must be allocated to a running process in a virtual memory environment is determined by-
- A.
the instruction set architecture
- B.
page size
- C.
number of processes in memory
- D.
physical memory size
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 45 Q11549
A program consists of two modules executed sequentially. Let f1(t) and f2(t)respectively denote the probability density functions of time taken to execute the two modules. The probability density function of the overall time taken to execute the program is given by
- A.
f1(t) + f2(t)
- B.
∫₀¹ f₁(x)f₂(x) dx
- C.
∫₀ᵗ f₁(x)f₂(t−x) dx
- D.
max (f₁(t) + f₂(t))
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 46 Q11531
Consider a small 2-way set-associative cache memory, consisting of four blocks. For choosing the block to be replaced, use the least recently (LRU) scheme. The number of cache misses for the following sequence of block addresses is 8, 12, 0, 12, 8
- A.
2
- B.
3
- C.
4
- D.
5
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 47 Q11541
Which commands are used to control access over objects in relational database?
- A.
CASCADE & MVD
- B.
GRANT & REVOKE
- C.
QUE & QUIST
- D.
None of these
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 48 Q11544
Which of the following is aggregate function in SQL?
- A.
Avg
- B.
Select
- C.
Ordered by
- D.
distinct
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 49 Q11594
One approach to handling fuzzy logic data might be to design a computer using ternary (base-3) logic so that data could be stored as “true,” “false,” and “unknown.” If each ternary logic element is called a flit, how many flits are required to represent at least 256 different values?
- A.
4
- B.
5
- C.
6
- D.
7
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 50 Q70348
A view of a database that appears to an application program is known as
- A.
Schema
- B.
Subschema
- C.
Virtual table
- D.
None of these
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 51 Q11593
Armstrong’s inference rule doesn’t determine
- A.
Reflexivity
- B.
Augmentation
- C.
Transitivity
- D.
Mutual dependency
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 52 Q11542
Which operation is used to extract specified columns from a table?
- A.
Project
- B.
Join
- C.
Extract
- D.
Substitute
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 53 Q11567
In a multibyte data unit stored in big-endian order, at which address is the most significant byte stored?
- A.
MSB of data in the lowest memory address of data unit
- B.
LSB of data in the lowest memory address of data unit
- C.
MSB of data in the highest memory address of data unit
- D.
LSB of data in the highest memory address of data unit
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 54 Q11543
For a relation known to be in 3NF but not BCNF, which dependency pattern explains the gap?
- A.
Two (or more) candidate keys
- B.
Two candidate keys and composite
- C.
A non-superkey determinant with a prime dependent attribute
- D.
Two mutually exclusive foreign keys
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 55 Q11527
Selection sort algorithm design technique is an example of
- A.
Greedy method
- B.
Divide-and-conquer
- C.
Dynamic Programming
- D.
Backtracking
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 56 Q98822
Which of the following RAID levels provides the highest data transfer rate for a large sequential read/write transfer?
- A.
RAID 1
- B.
RAID 3
- C.
RAID 4
- D.
RAID 5
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 57 Q11587
Which of the following programming language(s) provides garbage collection automatically
- A.
Lisp
- B.
C++
- C.
Fortran
- D.
C
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 58 Q11528
The Average case and worst case complexities for Merge sort algorithm are
- A.
O ( n2 ), O ( n2 )
- B.
O ( n2 ), O ( n log2n )
- C.
O ( n log2n ), O ( n2)
- D.
O ( n log2n ), O ( n log2n )
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 59 Q11538
The time taken by binary search algorithm to search a key in a sorted array of n elements is
- A.
O ( log2n )
- B.
O ( n )
- C.
O ( n log2n )
- D.
O ( n2)
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 60 Q11545
Which of the following is correct with respect to Two phase locking protocol?
- A.
Ensures serializability
- B.
Prevents Deadlock
- C.
Detects Deadlock
- D.
Recover from Deadlock
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 61 Q11590
The Fibonacci sequence is the sequence of integers
- A.
1, 3, 5, 7, 9, 11, 13
- B.
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
- C.
0, 1, 3, 4, 7, 11, 18, 29, 47
- D.
0, 1, 3, 7, 15
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 62 Q11565
Let X be the adjacency matrix of a graph G with no self loops. The entries along the principal diagonal of X are
- A.
all zeros
- B.
all ones
- C.
both zeros and ones
- D.
different
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): A
Question 63 Q11575
Which of these is not a feature of WAP 2.0?
- A.
Push and Pull Model
- B.
Interface to a storage device
- C.
Multimedia messaging
- D.
Hashing
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 64 Q11520
Feedback queues
- A.
are very simple to implement
- B.
dispatch tasks according to execution characteristics
- C.
are used to favour real time tasks
- D.
require manual intervention to implement properly
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 65 Q11582
Which of the following is not a UML DIAGRAM?
- A.
Use Case
- B.
Class Diagram
- C.
Analysis Diagram
- D.
Swimlane Diagram
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 66 Q11571
Silly Window Syndrome is related to
- A.
Error during transmission
- B.
File transfer protocol
- C.
Degrade in TCP performance
- D.
Interface problem
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 67 Q11581
To execute all loops at their boundaries and within their operational bounds is an example of
- A.
Black Box Testing
- B.
Alpha Testing
- C.
Recovery Testing
- D.
White Box Testing
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 68 Q11572
SSL is not responsible for:
- A.
Mutual authentication of client & server
- B.
Secret communication
- C.
Data integrity protection
- D.
Error detection and correction
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 69 Q11580
A rule in a limited entry decision table is a
- A.
row of the table consisting of condition entries
- B.
row of the table consisting of action entries
- C.
column of the table consisting of condition entries and corresponding action entries
- D.
columns of the table consisting of conditions of the stub
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 70 Q11585
The standard for certificates used on the internet is:
- A.
X.25
- B.
X.301
- C.
X.409
- D.
X.509
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 71 Q11584
A hashed message is signed by a sender using:
- A.
his public key
- B.
his private key
- C.
receiver’s public key
- D.
receiver’s private key
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 72 Q11573
An email contains a textual birthday greeting, a picture of a cake and a song. The order is not important. What is the content-type?
- A.
Multipart/mixed
- B.
Multipart/parallel
- C.
Multipart/digest
- D.
Multipart/alternative
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 73 Q11589
Range of IP Address from 224.0.0.0 to 239.255.255.255 are
- A.
Reserved for loopback
- B.
Reserved for broadcast
- C.
Used for multicast packets
- D.
Reserved for future addressing
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 74 Q11524
IEEE 802.11 is standard for
- A.
Ethernet
- B.
Bluetooth
- C.
Broadband Wireless
- D.
Wireless LANs
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 75 Q11568
When a host on network A sends a message to a host on network B, which address does the router look at?
- A.
Port
- B.
IP
- C.
Physical
- D.
Subnet mask
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 76 Q11579
Which of the following is not an approach to Software Process Assessment?
- A.
SPICE(ISO/IEC15504)
- B.
Standard CMMI Assessment Method for process improvement
- C.
ISO 9001:2000
- D.
IEEE 2000:2001
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): D
Question 77 Q11578
A physical DFD specifies
- A.
what processes will be used
- B.
who generates data and who processes it
- C.
what each person in an organization does
- D.
which data will be generated
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): B
Question 78 Q11576
In UML diagram of a class
- A.
state of object cannot be represented
- B.
state is irrelevant
- C.
state is represented as an attribute
- D.
state is represented as a result of an operation
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C
Question 80 Q11570
Dijkstra’s algorithm is used to
- A.
Create LSAs
- B.
Flood an internet with information
- C.
Calculate the routing tables
- D.
Create a link state database
Official answer key
Official answer key (ISRO Scientist/Engineer SC Computer Science 2007 ISRO Scientist/Engineer SC 2007 · Computer Science): C