C-CAT Networking Question Part-3

 Question 1:

The interactive transmission of data within a time sharing system may be best suited to 

a. simplex lines

b. half-duplex lines

c. full duplex lines

d. biflex-lines

Question 2:

Which of the following statement is incorrect?

a. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission.

b. Half duplex line is a communication line in which data can move in two directions, but not at the same time.

c. Teleprocessing combines telecommunications and DP techniques in online activities

d. Batch processing is the prefered processing mode for telecommunication operation.

Question 3:

Which of hte following is considered a broad band communication channel?

a. coaxial cable

b. fiber optics cable

c. microwave circuits

d. all of above

Question 4:

Which of the following is not a transmission medium?

a. telephone lines

b. coaxial cables

c. modem

d. microwave systems

Question 5:

Which of the following does not allow multiple uses or devices to share one communication line?

a. doubleplexer

b. multiplexer

c. concentrator

d. controller

Question 6:

Which of the following signal is not standard RS-232-C signal?

a. VDR

b. RTS

c. CTS

d. DSR

Question 7:

Which of the following statement is incorrect?

a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line

b. HDLC is a standard synchronous communication protocol.

c. RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data

d. RTS/CTS is the way the terminal indicates ringing

Question 8:

Which of the following is an advantage to using fiber optics data transmission?

a. resistance to data theft

b. fast data transmission rate

c. low noise level

d. all of above

Question 9:

Which of the following is required to communicate between two computers?

a. communications software

b. protocol

c. communication hardware

d. all of above including access to transmission medium

Question 10:

The transmission signal coding method of TI carrier is called

a. Bipolar

b. NRZ

c. Manchester

d. Binary

1. b

2. d

3. d

4. c

5. a

6. a

7. d

8. d

9. d

10. a

Which data communication method is used to transmit the data over a serial communication link?

a. simplex

b. half-duplex

c. full-duplex

d. b and c

e. None of above

Question 2:

What is the minimum number of wires needed to send data over a serial communication link layer?

a. 1

b. 2

c. 4

d. 6

e. none of above

Question 3:

Which of the following types of channels moves data relatively slowly?

a. wide band channel

b. voice band challen

c. narrow band channel

Question 4:

Most data communications involving telegraph lines use:

a. simplex lines

b. wideband channel

c. narrowband channel

d. dialed service

Question 5:

A communications device that combines transmissions from several I/O devices into one line is a 

a. concentrator

b. modifier

c. multiplexer

d. full-duplex line

Question 6:

How much power (roughly) a light emitting diode can couple into an optical fiber?

a. 100 microwatts

b. 440 microwatts

c. 100 picowatts

d. 10 miliwatts

Question 7:

The synchronous modems are more costly than the asynchronous modems because

a. they produce large volume of data

b. they contain clock recovery circuits

c. they transmit the data with stop and start bits

d. they operate with a larger bandwidth

e. none of above

Question 8:

Which of the following statement is correct?

a. terminal section of a synchronous modem contains the scrambler

b. receiver section of a synchronous modem contains the scrambler

c. transmission section of a synchronous modem contains the scrambler

d. control section of a synchronous modem contains the scrambler

e. none of the above

Question 9:

In a synchronous modem, the digital-to-analog converter transmits signal to the 

a. equilizer

b. modulator

c. demodulator

d. terminal

e. none of aobve

Question 10:

Which of the following communications lines is best suited to interactive processing applications?

a. narrow band channel

b. simplex lines

c. full duplex lines

d. mixed band channels

1. c

2. b

3. c

4. c

5. c

6. a

7. b

8. c

9. a

10. c

A remote batch-processing operation in which data is solely input to a central computer would require

a. telegraphp line

b. simplex lines

c. mixed bad channel

d. all of above

Question 2:

A band is always equivalent to 

a. a byte

b. a bit

c. 100 bits

d. none of above

Question 3:

The loss in signal power as light travels down the fiber is called

a. attenuation

b. progragation

c. scattering

d. interruption

Question 4:

Avalanche photodiode receivers can detect bits of transmitted data by receiving

a. 100 photons

b. 200 photons

c. 2000 photons

d. 300 photons

Question 5:

Communiction circuits that transmit data in both directions but not at the same time are operating in

a. a simplex mode

b. a half duplex mode

c. a full duplex mode

d. an asynchronous mode

Question 6:

An example of a medium speed, switched communications service is

a. series 1000

b. data phone 50

c. DDD

d. All of the above

Question 7:

In communication satellite, multiple repeaters are known as

a. detector

b. modulator

c. stations

d. transponders

Question 8:

While transmitting odd-parity coded symbols, the number of zeros in each symbol is

a. odd

b. even

c. a and b both

d. unknown

Question 9:

Data communications monitors available on the software marked include

a. ENVIRON/1

b. TOTAL

c. BPL

d. Telnet

Question 10:

An example of an analog communication method is

a. laser beam

b. microwave

c. voice grade telephone line

d. all of the above

1. b

2. d

3. a

4. b

5. b

6. c

7. d

8. d

9. a

10. d

Number of bits per symbol used in Baudot code is

a. 7

b. 5

c. 8

d. 9

Question 2:

What is the main difference between DDCMP and SDLC?

a. DDCMP does not need special hardware to final the beginning of a message

b. DDCMP has a message header

c. SDLC has a IP address

d. SDLC does not use CRC

Question 3:

An example of digital, rather than analog, communication is

a. DDD

b. DDS

c. WATS

d. DDT

Question 4:

Terminals are required for 

a. real-time, batch processing & time-sharing

b. real time, time-sharing & distributed message processing

c. real time, distributed processing & manager inquiry

d. real-time,  time sharing & message switching

Question 5:

The receive equilizer reduces delay distortions using a

a. tapped delay lines

b. gearshift

c. descrambler

d. difference engine

Question 6:

Ina synchronous modem, the receive equilizer is known as

a. adaptive equilizer

b. impariment equilizer

c. statistical equilizer

d. compromise equilizer 

Question 7:

The channel in the data communication model can be

a. postal mail services

b. telephone lines

c. radio lines

d. any of the above

Question 8:

A data terminal serves as an

a. Effector

b. sensor

c. both a and b

d. neither a nor b

Question 9:

Which of the following transmission systems provide the highest data rate to in individual device?

a. computer bus

b. telephone lines

c. voice and mode

d. lease lines

Question 10:

A protocol is a set of rules governing a time sequence of events that must take place

a. between peers

b. between an interface

c. between modems

d. across an interface

1. b

2. a

3. b

4. d

5. a

6. a

7. d

8. c

9. a

10. a

CDAC Paper on 04th August 2007 in Pune

CDAC has a common campus placement program on 4th Aug 2007 in Maharashtra Hotel Mgmt. College, Pune. At the time of presentation they told that they have a requirement of 80 people.

CDAC has no test paper, they directly take the Interviews. They have differnet departments like GIST, AAI, SCMC, NISG, eGOV etc. According to department they have diff. skil set requirement. I have been qualified for GIST dapartment.
GIST-Graphics & Integillence Scripting Technology.
eGov-E-Goverence.

Below I will give some of the interview questions which they asked me. I think they have a requirement in SDK so they asked questions most of them from SDk.
1)Tell me briefly about ur BE project?
2)what is the role of u in ur project?
3)How much u rank ur self in SDK & C++?
when i told them about SDK like bet 6-7 then they said it is too high for SDK, so we will ask questions according to that?
5)what is the function of getMessage Loop?
6)What is DlgProc?
7)what is modal& modless dialogbox?give any practical example of that?which commands r used for that?
8)Do u know about System Model?
9)About the TranslateAccerlator?
10)what happens when any keyboard key is pressed?(abt WM_CHAR message)
11)tell me GDI objects?
12)Abt Device context?
13)Any idea abt Debug & release version?which one size is more & why ?
14)abt static linking & dyanimic linking?
15)In dyanmic link library,which api is used for load the library?(ans:LoadLibrary)
16)Why Dyanimic link libraries r used over static one?
17)About STL(std. template library)like container,iterator
18)WAP using template for swapping of 2 intgers?
19)whether if we allocate the memory using 'new' & deallocated using 'free' then what will happen? 
20)any idea abt MFC?
21)which dlls r used for SDK?(like krne32.dll, user32.dll, gid32.dll & for what purpose each of them is used?)

below r some of the questions asked to my friends?
1)abt ADo.NET? Sqldatareader, dataadapter
2)page caching, output caching?
3)Assembly file structure in .NET?
4)delegate & event? what isthe diff. bet evevt & delegaTE?
5)WRITE A function pointer?
6)PAGE directive in JSP page?
8)Garbage collector in java?

C - DAC Paper 13th July 2008

APTITUDE (20 Questions)

1. Questions on coding & decoding

2. Question on series (the questions were not striking at glance)

3. There were questions like, an expression is given 4+5*9/3*27=9(say), which two signs should be interchanged so that the expression evaluates to be 13(say).

4. Problem on mixture, like a shopkeeper earns a profit of 10% on selling a product 'C' at Rs 22/kg. C is mixture of A&B. if A's cost is Rs14/kg, then find B's.

5. There are two numbers. If the bigger one is multiplied by 3 then divided b the smaller one the reminder "ient comes out to be r1&q1. if the smaller one is first is multiplied by 5&then divided by bigger one the remainder "ient are r2,q2. find the bigger number.

The numerical values of r1,q1,r2&q2 were given.

**** BOOK:- R.S.AGGARWAL

C LANGUAGE (40 Questions)

1. Good quality questions that tests theory of “c”.

2. Good number of problems that involves pointers & strings.

3. few questions on function calling, conditional operators, hierarchy of logical AND & logical OR.

The quality of questions was extremely good.

**** BOOK:- EXPLORING 'C'

DIGITAL ELECTRONICS (40 Questions)

1. Extremely good questions on coding, the term  “excess code” appeared a number of times, there was also good question on basic term radix. e.g which coding is best suitable for complement operation.

2. What is the minimum no. NAND gates that are required to implement a given Boolean expression?

3. Treatment of logic gates wih high or low enable inputs, there was a term “floating point “ that appeared in context with o/p of logic gates..

4. Simple questions from combinational & sequential circuits.

5. performance parameters of various digital logic families (all sorts of TTL, ECL, IIL, MOS, CMOS).

6. Few basic questions from microprocessor that involves the topics interrupt, interrupt handling, addressing modes.

**** BOOK:- DIGITAL ELECTRONICS BY MORRIS MANO