An entire path name consisting of several sub-directory names can contain upto
1. 13 character
2.36 character
3. 63 character
4.53 character
Posted Date:-2021-10-06 11:10:42
CPU does not perform the operation
1.data transfer
2.logic operation
3.arithmetic operation
4.all of above
Posted Date:-2021-10-06 11:10:42
Format command is used to
1.Prepare a blank disk
2.Create a new blank disk from a used one
3.Both of above
4.None of above
Posted Date:-2021-10-06 11:10:42
How much power (roughly) a light emitting diode can couple into an optical fiber? 100 microwatts
1.100 microwatts
2.440 microwatts
3.100 picowatts
4.10 miliwatts
Posted Date:-2021-10-06 11:10:42
In a synchronous modem the digital-to-analog converter transmits signal to the
1.equilizer
2.modulator
3.demodulator
4.terminal
Posted Date:-2021-10-06 11:10:42
In Ms-Dos what command you will use to display system date?
1.Date command
2.Ver command
3.Disk command
4.Format command
Posted Date:-2021-10-06 11:10:42
In OSI network architecture the routing is performed by
1.network layer
2.data link layer
3.transport layer
4.session layer
Posted Date:-2021-10-06 11:10:42
In which version of DOS. CHKDSK command has been changed to SCANDISK?
1.5
2.6.2
3.6
4.5.2
Posted Date:-2021-10-06 11:10:42
Interrupts which are initiated by an instruction are
1.internal
2.external
3.hardware
4.software
Posted Date:-2021-10-06 11:10:42
Memory access in RISC architecture is limited to instructions
1. CALL and RET
2. PUSH and POP
3. STA and LDA
4. MOV and JMP
Posted Date:-2021-10-06 11:10:42
Most data communications involving telegraph lines use:
1.simplex lines
2.wideband channel
3.narrowband channel
4.dialed service
Posted Date:-2021-10-06 11:10:42
RESTORE command is used to
1.Restore files from disks made using the BACKUP command
2.Restore files which are deleted
3.Restore files from recycle bin
4.Restore files which are deleted recently
Posted Date:-2021-10-06 11:10:42
The command used to copy a file named temp.doc from drive C: to drive A: is
1.Copy temp.doc to a:
2.Copy c: emp.doc a:
3.Copy c: a:
4.Copy temp a: c:
Posted Date:-2021-10-06 11:10:42
The two basic types of record access methods are
1. sequential and randon
2. direct and immediate
3. sequential and indexed
4.on-line and real-time
Posted Date:-2021-10-06 11:10:42
What is meant by a dedicated computer?
1.which is used by one person only
2.which is assigned to one and only one task
3.which does one kind of software
4.which is meant for application software only
Posted Date:-2021-10-06 11:10:42
Which command displays current directory name or change from one to another?
1.Chdir
2.Cd
3.Mkdir
4.Both a and b
Posted Date:-2021-10-06 11:10:42
Which command displays only file and directory names without size date and time information?
1. Dir/w
2.Dir a:
3. Dir /b
4.Dir /s
Posted Date:-2021-10-06 11:10:42
Which command is used to backup in DOS 6+ Version
1. BACKUP
2. MSBACKUP
3. MSBACKEDUP
4. All of the above
Posted Date:-2021-10-06 11:10:42
Which command is used to change the file name?
1.Ren
2.Rename
3.Both of above
4.None of above
Posted Date:-2021-10-06 11:10:42
Which of hte following is not characteristic of COBOL
1.it is a very standardized language
2. it is a very efficient in terms of coding and execution
3.it has limited facilities for mathematical notation
4.it is very readable language
Posted Date:-2021-10-06 11:10:42
Which of the following signal is not standard RS-232-C signal?
1.VDR
2.RTS
3.CTS
4.DSR
Posted Date:-2021-10-06 11:10:42
Which of the following statement is incorrect?
1. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission.
2.Half duplex line is a communication line in which data can move in two directions but not at the same time.
3.Teleprocessing combines telecommunications and DP techniques in online activities
4.Batch processing is the prefered processing mode for telecommunication operation.
Posted Date:-2021-10-06 11:10:42
. A communications device that combines transmissions from several I/O devices into one line is a
1.modifier
2.concentrator
3.multiplexer
4.full-duplex line
Posted Date:-2021-10-06 11:10:42
. Layer one of the OSI model is
1.physical layer
2.link layer
3.transport layer
4.network layer
Posted Date:-2021-10-06 11:10:42
. The maximum length in DOS commands is
1.80 chars
2.127 chars
3.100 chars
4.8 chars
Posted Date:-2021-10-06 11:10:42
A remote batch-processing operation in which data is solely input to a central computer would require
1.telegraphp line
2.simplex lines
3.mixed bad channel
4.all of above
Posted Date:-2021-10-06 11:10:42
Communiction circuits that transmit data in both directions but not at the same time are operating in
1. a simplex mode
2.a half duplex mode
3.a full duplex mode
4.an asynchronous mode
Posted Date:-2021-10-06 11:10:42
Generally the DATE is entered in the form
1.DD-YY-MM
2.YY-DD-MM
3. MM-YY-DD
4.MM-DD-YY
Posted Date:-2021-10-06 11:10:42
How many OSI layers are covered in the X.25 standard?
1.Two
2.Three
3.Seven
4.Six
Posted Date:-2021-10-06 11:10:42
Operating System is like a
1.Parliament
2.Secretary
3.Government
4.None of the above
Posted Date:-2021-10-06 11:10:42
Sequential file organization is most appropriate for which of following applications?
1.Grocery store checkout
2.bank checking account
3.payroll
4.airline reservations
Posted Date:-2021-10-06 11:10:42
Where does a computer add and compare data?
1.Hard disk
2.Floppy disk
3.CPU chip
4.Memory chip
Posted Date:-2021-10-06 11:10:42
Which command be used to ask you to confirm that you want to delete the directory?
1.Deltree
2.Deltree/f
3.Del *.*/p
4. Erase *.*
Posted Date:-2021-10-06 11:10:42
Which command creates a directory or subdirectory?
1.Dir
2.Mkdir
3.Md
4.Both b and c
Posted Date:-2021-10-06 11:10:42
Which command displays all the files having the same name but different extensions?
1.Dir filename.*
2.Dir filename.ext
3.Dir *.sys
4.Dir *.ext
Posted Date:-2021-10-06 11:10:42
Which command lists the contents of current directory of a disk
1.Copy
2.Tree
3.Cd
4.Dir
Posted Date:-2021-10-06 11:10:42
Which of the following does not allow multiple uses or devices to share one communication line?
1.doubleplexer
2.multiplexer
3.concentrator
4.controller
Posted Date:-2021-10-06 11:10:42
Which of the following extensions suggest that the file is a backup copy
1. Bak
2. Bas
3. Com
4. Txt
Posted Date:-2021-10-06 11:10:42
Which of the following file organization is most effieient for a file with a high degree of file activity?
1.sequential
2.ISAM
3.VSAM
4. B-Tree
Posted Date:-2021-10-06 11:10:42
Which of the following is not a transmission medium?
1.telephone lines
2.coaxial cables
3.modem
4.microwave systems
Posted Date:-2021-10-06 11:10:42