LDC • Paper-II
Observe the following number series and identify the number that should come next: 1, 4, 9, 16, 25, ?
A)
30
B)
36
C)
40
D)
49
Series is squares: 1^2,2^2,3^2,4^2,5^2 => next 6^2=36.
LDC • Paper-II
A mixture contains milk and water in the ratio 7 : 3. If 10 litres of water is added to the mixture, the ratio becomes 7 : 5. What was the original quantity of milk in the mixture?
A)
21 litres
B)
35 litres
C)
42 litres
D)
49 litres
Let milk=7x and water=3x. Then 7x/(3x+10)=7/5 gives x=5, so milk=35 L.
LDC • Paper-II
The first dial-up connection was made in 1965 by:
A)
Lawrence G. Roberts
B)
Robert Hook
C)
Tim Berners Lee
D)
Charles Babbage
Lawrence G. Roberts made an early dial-up computer connection in 1965.
LDC • Paper-II
Which language was used by the second generation of computers?
A)
Assembly language
B)
Machine language
C)
Low-level language
D)
High-level language
Second-generation computers used assembly language.
LDC • Paper-II
The angle of elevation of the top of a tower from a point on the ground is 30°. If the point is 20√3 meters away from the foot of the tower, what is the height of the tower?
A)
10 m
B)
30m
C)
20 m
D)
40 m
h = 20√3 × tan30° = 20√3 × 1/√3 = 20 m.
LDC • Paper-II
Which one of the following is different from the rest based on the method of reproduction in living organisms?
A)
Amoeba
B)
Hydra
C)
Bacteria
D)
Human
Amoeba, Hydra and bacteria reproduce asexually in the standard classification; humans reproduce sexually.
LDC • Paper-II
The ratio of the ages of A and B is 4 : 7. If the difference between their ages is 21 years, what is the age of B?
A)
24 years
B)
49 years
C)
28 years
D)
56 years
The ratio difference is 3 parts = 21, so one part is 7 and B is 7×7 = 49.
LDC • Paper-II
C-DAC stands for:
A)
Centre for Development of Advanced Computing
B)
Centre for Developing Advanced Computers
C)
Centre for Development of Advanced Computers
D)
Centre for Developing Advanced Computing
C-DAC stands for Centre for Development of Advanced Computing.
LDC • Paper-II
A television set is marked at 25,000 and sold for 21,250. What is the percentage discount offered on the television?
A)
12%
B)
15%
C)
18%
D)
20%
Discount = 3750; 3750/25000 × 100 = 15%.
LDC • Paper-II
Four friends A, B, C, and D have different heights. A is taller than B but shorter than C, and D is shorter than B. Who is the shortest among them?
A)
A
B)
B
C)
C
D)
D
C>A>B>D ordering, so D is shortest.
LDC • Paper-II
If the word “PENCIL” is written as “QFODJM” by shifting each letter one place forward, then how will “PAPER” be written in the same code?
A)
QBRFS
B)
QBQFR
C)
QBQFS
D)
QBPFS
Each letter +1: P->Q,A->B,P->Q,E->F,R->S => QBQFS.
LDC • Paper-II
Which of the following is the core of an operating system?
A)
Shell
B)
GUI
C)
File System
D)
Kernel
The kernel is the core component of an operating system.
LDC • Paper-II
The C-DAC Headquarter is located in which city?
A)
Mumbai
B)
Bangalore
C)
Pune
D)
Delhi
C-DAC is headquartered in Pune.
LDC • Paper-II
The typical acronym of reusable optical storage is:
A)
CD
B)
CD-RW
C)
DVD
D)
RPM
CD-RW means Compact Disc-ReWritable.
LDC • Paper-II
How many factors does the number 72 have?
A)
10
B)
12
C)
14
D)
16
72 = 2^3×3^2, so the number of positive factors is (3+1)(2+1)=12.
LDC • Paper-II
What does VLIW stand for?
A)
Very Long Instruction Width
B)
Very Large Instruction Word
C)
Very Long Instruction Wire
D)
Very Long Instruction Word
VLIW stands for Very Long Instruction Word.
LDC • Paper-II
Which of the following is the first neural network computer?
A)
AN
B)
AM
C)
RFD
D)
SNARC
SNARC is generally cited as the first neural-network machine.
LDC • Paper-II
The fourth-generation computers were based on the invention of:
A)
Microprocessor
B)
Artificial Intelligence
C)
Semiconductors
D)
Microprocessor and AI
Fourth-generation computers are based on microprocessors.
LDC • Paper-II
Which language can be understood directly by the CPU?
A)
C
B)
Machine Language
C)
Java
D)
All
Machine language consists of instructions directly understood by the CPU.
LDC • Paper-II
What is the full form of RTOS?
A)
Reliable Time Operating System
B)
Real Time Operating System
C)
Reboot Time Operating System
D)
Real Time Operation System
RTOS stands for Real Time Operating System.
LDC • Paper-II
You are appointed as the in-charge of a team and notice that productivity is declining because members are unclear about their roles; what should be your first decision?
A)
Warn all team members strictly
B)
Replace some members
C)
Clarify roles and responsibilities through a discussion
D)
Ignore the situation temporarily
Productivity issue due to role ambiguity; best first action is clarifying roles and responsibilities through discussion.
LDC • Paper-II
In a class, 40% of the students are girls. If the number of girls is 24, what is the total number of students in the class?
A)
50
B)
60
C)
64
D)
70
24 is 40% of the total, so total = 24/0.4 = 60.
LDC • Paper-II
If the cost of 12 pens is equal to the cost of 8 pencils, and the cost of one pencil is 6, what is the cost of one pen?
A)
3
B)
4
C)
6
D)
8
12*Cp =8*6=48 => Cp per pen =48/12=4.
LDC • Paper-II
Which standard network protocol is used to transfer computer files from one host to another host over a TCP-based network, such as the Internet?
A)
FTP
B)
HTTP
C)
HTTPS
D)
IP
FTP is the File Transfer Protocol used to transfer files over TCP/IP networks.
LDC • Paper-II
A term used in the context of web design to suggest the path that user takes while browsing a website is?
A)
Navigation
B)
Identification
C)
Pathing
D)
Steering
Navigation describes the paths users take through a website.
