B. EA.C5.
C. AE.5C.
D. CE.5A.
Right Answer is:
SOLUTION
Q. 191995 Discuss the representation of characters in memory.
A. first sector.
B. last sector.
C. middle sector.
D. second last sector.
The first sector of the disk is called the boot sector. It stores DOS instructions.
A. input output instruction execution.
B. logical IOCs.
C. physical IOCs.
D. paging.
They are responsible for I/O initiation, device selection, I/O execution and I/O termination.
A. Database Management System.
B. Desktop Publishing Packages.
C. Electronic Spreadsheet.
D. Word Processing Packages.
A Database Management System is a package that can handle and manage bulk of stored data.
A. dir.
B. dir/p.
C. dir/w.
D. chdir.
The chdir() function shall cause the directory named by the pathname pointed to by the path argument, to become the current working directory; that is, the starting point for path searches for pathnames not beginning with '/'.
A. multilevel or hierarchial.
B. linear and tangent.
C. linear and oval.
D. rectangular.
It follows the parent and child directory relationship. There can be sub directories also.
A. first name and second name.
B. primary name and secondary name.
C. primary file name and file extension.
D. outer file name and inner file name.
Each file system can have specific and different naming rules depending on the OS but general naming convention for a file name is same for an individual file. A base file name and an optional extension are separated by a period.
A. parent directory.
B. pathname.
C. sub directory.
D. direction directory.
Full name of a file or directory consists of pathprimary name.extension. It is also called as pathname.
A. many.
B. only two.
C. only three.
D. only one.
A parent directory can have many sub directories, denoted by backslash /.
A. square bracket [ ].
B. backslash .
C. forward slash / .
D. hypen - .
Full name of a file or directory consists of pathprimaryname.extension. For example, C:SalesMonthlyone.vbp Here, Sales is parent directory whereas Monthly is child directory.
A. directory.
B. file.
C. graphic symbol representing a window element.
D. folder.
Graphical elements pointing to a particular application or folder is an icon.
A. getting work done in less time.
B. a process in execution.
C. deadline over run.
D. process control block.
Processor Management means managing the process or processor i.e., the CPU.
A. exe.bat.
B. autoexec.bat.
C. root.bat.
D. command.bat.
The autoexec.bat is a system file found originally on the MS-DOS operating system. It is a plain text batch file. The name of the file stands for automatic execution.
A. physical IOCS.
B. logical IOCS.
C. file system.
D. demand paging.
Physical IOCS is also called as Input-Output Control System. It is responsible for ensuring device independence.
A. two categories.
B. three categories.
C. four categories.
D. five categories.
The three categories are: 1) Physics IOCS 2) Logical IOCS 3) File system
A. deadline scheduled.
B. deadline underrun.
C. deadline completed.
D. deadline over run.
Deadline over run is calculated as: K = C- D Here, K is deadline overrun C is job completion time D is deadline for a job
A. segmentation.
B. thrashing.
C. partition.
D. demand paging.
In thrashing, the computer spends too much time shuffling blocks of virtual memory between real memory and disks and therefore appears to work slower.
A. electronic spreadsheet.
B. DBMS.
C. text editor.
D. multimedia.
A Database Management System (DBMS) is a package that can handle and manage bulk of stored data. Some of the popular DBMSs are : Foxpro, Access, Oracle etc.
A. are the windows within an application window.
B. help to easily switch on to other windows.
C. are graphic windows.
D. are running application windows.
These are displayed in the parent's application window's workspace.
It integrates all the Operating Systems responsibilities regarding IO responsibilities and they also provide device level error recovery routines when recoverable errors occur.
Data Base Management System Software is a package that can handle and manage stored data in a sorted order.
My Computer tell us about – the programs, documents and data files that are all accessible from here.
Control Panel allows you to change the settings of your computer.
It is a program that loads MS DOS files.
Winchester Disk Drive. It is also the secondary storage device.
DIR C*.BAS.
Ctrl+Alt+
Some of the external commands of DOS are DISCOM, DISKCOPY, FORMAT, LABEL, MEM, MORE, PRINT, SYS, TREE, XCOPY etc.
The first level in a multilevel directory system is the root directory. It is created automatically at the time of formatting a disk.
These are the names given in order to the first, second and third partition of a Hard Disk.
The three multiple ways of opening windows explorer are :-
i) Click on Start – All programs or Programs – Accessories—Windows Explorer.
ii) Press Windows key+ E key.
iii) Click My Computer and click on Folders button.
Absolute pathname is mentioned from paths from the top most level of the directory structure.
Relative pathname mentions path relative to current working directory.
A path is a sequence of directory names which give the hierarchy to access a particular directory or file name. Whereas, the full name of a file or directory (including path) is called pathname.
A. 9AB17.
B. CC9B5.
C. C0075.
D. 23F58.
Divide successively by 16 and write the remainders from bottom to up.
A. megabyte.
B. byte.
C. kilobyte.
D. gigabyte.
1 byte when represented in binary form becomes a string of eight 0’s and 1’s.
A. gigabyte.
B. kilobyte.
C. megabyte.
D. terabyte.
Megabyte is a multiple of the unit byte for digital information storage or transmission and is equal to 106 (1,000,000) bytes.
A. kilobyte.
B. bit.
C. gigabyte.
D. megabyte.
Gigabyte is a SI-multiple of the unit byte for digital information storage. Since, the giga - prefix means 109, gigabyte means 1,000,000,000 bytes (10003, 109). However, this term is also often used meaning 1,073,741,824 bytes (10243, 230).
A. bit.
B. binary digit.
C. character.
D. kilobyte.
Each of the byte can hold a single character of information in it.
A. 101011001.
B. 100101100.
C. 101010011.
D. 101011010.
Follow successive division method by two and write the remainders from bottom to top.
A. 11101111000001001001.
B. 11110010100000101010.
C. 1010101010101010011.
D. 1100110011110011011.
Divide successively by 2 and write the remainders from bottom to up.
A. 796.
B. CC9.
C. 190.
D. 23F.
Divide successively by 16 and write the remainders from bottom to up.
A. 1A61.
B. CC9B.
C. CC91.
D. 23F5.
Divide successively by 16 and write the remainders from bottom to up.
A. AB2.
B. 2AB.
C. 1FD.
D. BA2.
Group into 4 and express the groups in hexadecimal form.
A. 12657.
B. 11647.
C. 23657.
D. 13654.
Divide into groups of three and express the groups in decimal form. 1001110100111 can be divided as 001 001 110 100 111.
A. AB.
B. A
A.
C. AC.
D. AD.
Group the number into fours. Write the corresponding hexadecimal equivalent.
A. 1110101010010010.
B. 1110000101001010.
C. 0001101001111001.
D. 1010101010100111.
Divide successively by 2 and write the remainders from bottom to up.
A. 9AB1AB67.
B. CC9BCD56.
C. 3B9A1C62.
D. 23F5AD34.
Divide successively by 16 and write the remainders from bottom to up.
A. 9AB1.
B. 11CC.
C. CC91.
D. 23F5.
Divide successively by 16 and write the remainders from bottom to up.
A. 9AB17.
B. CC9B9.
C. CC918.
D. 15B38.
Divide successively by 16 and write the remainders from bottom to up.
A. -100.
B. -1011.
C. -1010.
D. -101.
The two's compliment of 1001 1011 is 0110 0101. This represents 101 in decimal.
A. CC90.
B. 9CC0.
C. 1DE
A.
D. 1C1C.
Divide successively by 16 and write the remainders from bottom to up.
A. AC.F.
B. C
A.3.
C. AC.5.
D. C
A.4.
Group into four and express the groups in hexadecimal form.10101100.1111 can be written as 1010=A 1100=C . 1111=F
A. 5E.AC1.
B. E
A.C52.
C. 5E.AC3.
D. 1AE.DC.
Group into 4 and express the groups in hexadecimal form.
A. 7-bit code.
B. 5-bit code.
C. 8-bit code.
D. 16-bit code.
ISCII is a 8 bit code capable of coding 256 characters.
A. 8-bit code.
B. 2-bit code.
C. 7-bit code.
D. 9-bit code.
It is a 7-bit parity code and can code up to 2^7-1=127 characters.
A. universal coding.
B. unique coding.
C. uppercase coding.
D. unique code.
It is a new universal code standard, which was adopted for all new platforms by the Unicode Consortium.
A. 110110101001.
B. 101010100110.
C. 111110010110.
D. 111101001011.
Convert each digit to its decimal equivalent. F=15=1111; 4=0100; B=11=1011
A. 0010110110001.
B. 0101000110101.
C. 0101011000110.
D. 0101000010110.
Replace 1 by 0 and 0 by 1.
A. 1011101000111110.
B. 1100100011101110.
C. 0000010100110001.
D. 1111101011001110.
Convert each digit to its decimal equivalent. F=15=1111; A=10=1010; C=12=1100; E=14=1110
A. 0100101010001100.
B. 0100110010001010.
C. 1100010110101110.
D. 0101110110001101.
Convert each digit to its decimal equivalent. 4=0100; A=10=1010; 8=1000; C=12=1100
A. low standard bit.
B. least standard bit.
C. least significant bit.
D. leftmost significant bit.
The leftmost bit in a binary number is referred to as Least Significant Bit. The least significant bit (lsb) is the bit position in a binary integer giving the units value, that is, determining whether the number is even or odd.
A. 2^n.
B. 2n.
C. 2n-1.
D. 2^n-1.
Numbers that can be represented by N-bit word is 2^n-1. For example, when N = 4; then numbers are 15.
A. Memory Standard Bit.
B. Memory Stored Bit.
C. Most significant Bit.
D. Most Standard Bit.
MSB stands for Most Significant Byte. The rightmost bit is known as the most significant bit.
A. 100110.0011010111.
B. 110001.1100010110.
C. 100011.0011010111.
D. 110100.0110100101.
The machine first converts 38 to its binary equivalent and then .21 into binary equivalent.
A. 26.
B. 25.
C. 22.
D. 19.
Multiply each one by 2^(n-1) where n is its position. 1*16+0+1*4+1*2+0=22
A. 00001101.
B. 00010111.
C. 11010010.
D. 11110010.
Find the binary equivalent of 13 and then replace 0’s by 1 and 1 by 0’s. +13 = 00001101 and -13 = 11110010
A. 10.
B. 12.
C. 15.
D. 14.
In hexadecimal number system, 15 is represented as F.
A. 100110.
B. 110101.
C. 010110.
D. 101011.
Divide the given number by 2 and write down the remainder from down to up.
A. Authorised Standard for Coding and Information Interchanging.
B. American Scientific Code For Information Exchange.
C. American Standard Code for Information Interchange.
D. American Standard Compression with Information Interchange.
It is the most widely used alphanumeric code, which was proposed by the American Standard for Information Interchange.
A. Decimal Number System.
B. Octal Number System.
C. Hexadecimal Number System.
D. Binary Number System.
In a binary system, there are only two symbols or possible digit values, 0 and 1. It is very difficult to design electronic circuit, which can work with 10 different voltage levels.
A. 100101010001100.
B. 11111100101010
C. 10101110010100
D. 11111111100010
Convert each digit into its binary equivalent, i.e., 4 is 0100, A is 1010, 8 is 1000 and C is 1100. Thus, the solution is 100,1010,1000,1100.
MSD is Most Significant Digit. It is the left-most bit of a binary number and has the highest weight.
A. LSD.
B. MSD.
C. NSD.
D. ZSD.
9 contains the least weight of three digits. So, it is referred to as the least significant digit (LSD).
A. LSD.
B. MSD.
C. NSD.
D. ZSD.
7 contains the most weight of three digits. So, it is referred to as the most significant digit (MSD).
A. 6 digits.
B. 8 digits.
C. 10 digits.
D. 12 digits.
The decimal system is composed of 10 numerals or symbols. These 10 symbols are 0,1,2,3,4,5,6,7,8,9. Using these symbols as digits of a number, we can express any quantity.
A. a decimal number system.
B. an automatic machine.
C. a computer.
D. a mobile setting machine.
A computer is a machine that manipulates data according to a list of instructions.
A. 00001101.
B. 11101010.
C. 01010101.
D. 11110010.
To calculate one’s complement, replace 0 with 1 and 1 with 0. 13 is represented by 00001101. –13 is represented by 11110010.
A. replace 0 with 1 and 1 with 0.
B. replace 0 with 2 and 1 with 0.
C. replace 0 with 1 and 2 with 0.
D. replace 0 with 2 and 2 with 0.
For example, 1’s complement of a binary number 1001 will be 0110 and for 0011 it will be 1100.
A. two.
B. three.
C. four.
D. five.
Integers may be represented in various ways in computers. These are sign and magnitude representation, one’s complement, and two’s complement representations.
A. 9 through 15.
B. 10 through 16.
C. 10 through 15.
D. 9 through 16.
A = 10, B = 11, C =12, D=13, E=14, F=15.
A. three binary digits.
B. four binary digits.
C. five binary digits.
D. six binary digits.
Each hexadecimal digit represents a group of four binary digits. For example, 0 is represented by 0000 and 9 is represented by 1001.
A. 11101111.
B. 10101010.
C. 11110000.
D. 11111110.
17 is represented by 00010001. Its complement will be 11101110. Add 1 to its complement. The result will be 11101111.
A. A
A.
B. BB.
C. CC.
D. DD.
Group the number into fours. Write the corresponding hexadecimal equivalent.
A. eight bytes.
B. eight kilobytes.
C. eight characters.
D. eight bits.
Each character is stored in one byte of information, which is eight bits of memory.
A. 9AB1.
B. CC9B.
C. CC91.
D. 11CC9.
16 72905
16 4556 9 9
16 284 12 C
16 17 12 C
16 1 1 1
0 1 1
A. 61230.
B. 60231.
C. 60234.
D. 61234.
EB4A16 =14x163 +11x162+4x161+10x160.
=6023410.
A. 11011111.
B. 01100101.
C. 00110101.
D. 11111100.
Positive expression of the number is 0000 0100.
Compliment 1111 1011.
Add 1 1111 1100.
Therefore –4 equals 1111 1100.
A. multimedia.
B. words.
C. characters.
D. numbers.
Data is converted into ASCII format for processing. In ASCII format, each and every character is represented as a number.
A. programming.
B. processing.
C. storing.
D. organizing.
The extraction of information from raw facts i.e. data is called processing.
A. CC901.
B. 9CC01.
C. 11CC9.
D. 1C1C9.
Divide successively by 16 and write the remainders from bottom to up.
A. AC.4.
B. C
A.3.
C. AC.5.
D. C
A.4.
Group into 4 and express the groups in hexadecimal.
A. 5E.AC.
B. E
A.C5.
C. AE.5C.
D. CE.5
A.
Group into 4 and express the groups in hexadecimal. 10101110.010111 can be written as 1010=A, 1110=E, 0101=5, 1100=C
A computer can recognize codes that represent letters of the alphabet, punctuation marks, & other special characters as well as numbers. These codes are called alphanumeric codes. A complete alphanumeric code would include the 26 lowercase letters, 25 uppercase letters, 10 numeric digits, 7 punctuation marks, & anywhere from 20 to 40 other characters, such as +, /, #, %, *, etc. An alphanumeric code represents all of the various characters & functions that are found on a standard typewriter or keyboard.
ASCII Code the most widely used alphanumeric code, the American Standard Code for Information Interchange (ASCII), is used in most microcomputers & minicomputers & mainframes. It is a 7-bit code, & so it has 27 = 128 possible code groups.
The Hexadecimal number system uses base 16. Thus, it has 16 possible digit symbols. It uses the digits 0 through 9 plus the letters A, B, C, D, E & F as the 16 digit symbols. Positional Values in Hexadecimal numbers are as in figure:
The Octal number system is very important in digital computer work. The octal number system has a base of eight, meaning that it has eight unique symbols: 0, 1, 2, 3, 4, 5, 6 and 7. Thus, each digit of an octal number can have any value from 0 to 7. Positional Values in octal numbers are as in figure:
In the binary system, there are only two symbols or possible digit values, 0 & 1. This base - 2 system can be used to represent any quantity that can be represented in decimal or other number systems. The binary system is also a positional - value system, wherein each binary digit has its own value or weight expressed as a power of 2. Positional Values in Binary numbers are as in figure:
The decimal system is a positional-value system in which the value of a digit depends on its position. For example, consider the decimal number 729. We know that the digit 7 represents 7 hundreds, the 2 represents 2 tens, & the 9 represents 9 units. Therefore, the 7 carry the most weight of three digits; it is referred as the MOST SIGNIFICANT DIGIT (MSD). The 9 carry the least weight & the LEAST SIGNIFICANT DIGIT (LSD).
EXAMPLE:
The decimal system is composed of 10 numerals or symbols (Deca means 10, that is why this system is called decimal system). These 10 symbols are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9; using these symbols as digits of a number, we can express any quantity. The decimal system is also called the base -10 system. Positional values in Decimal numbers are as in figure:
