Code (General Concepts)
What is the process of converting characters or numbers into binary in a computer system called?
(a) Coding (b) Decoding (c) Encryption (d) Modulation
Answer: a
What type of data does a code primarily process?
(a) Alphanumeric (b) Analog (c) Natural (d) Complex
Answer: a
Which code is used exclusively to represent numbers?
(a) Numeric (b) Alphanumeric (c) ASCII (d) Unicode
Answer: a
Which code represents letters, digits, and special characters?
(a) Alphanumeric (b) Numeric (c) Gray (d) Excess-3
Answer: a
Which of the following is NOT an alphanumeric code?
(a) BCD (b) ASCII (c) EBCDIC (d) Unicode
Answer: a
BCD Code
What is the full form of BCD?
(a) Binary Coded Decimal (b) Bit Coded Decimal (c) Basic Coded Decimal (d) Binary Count Decimal
Answer: a
How many bits does a BCD code typically consist of?
(a) 4 bits (b) 7 bits (c) 8 bits (d) 16 bits
Answer: a
Which code directly converts each decimal digit into binary?
(a) BCD (b) ASCII (c) Gray (d) Excess-3
Answer: a
Which is the most widely used variation of BCD code?
(a) BCD 8421 (b) BCD 7421 (c) BCD 5421 (d) BCD 2421
Answer: a
What is the BCD (8421) value of the decimal number 9?
(a) 1001 (b) 1111 (c) 0101 (d) 1010
Answer: a
How many bits will the BCD value of the decimal number 25 contain?
(a) 4 bits (b) 8 bits (c) 16 bits (d) 2 bits
Answer: b
What is the maximum number of states that can be represented by a BCD code?
(a) 10 (b) 16 (c) 8 (d) 4
Answer: b
Which is the BCD representation of the decimal number 7?
(a) 0111 (b) 1110 (c) 0000 (d) 1000
Answer: a
What type of code is BCD?
(a) Numeric (b) Alphanumeric (c) Unweighted (d) Signed
Answer: a
ASCII Code
What is the full form of ASCII?
(a) American Standard Code for Information Interchange (b) Asian Standard Code for Information Interchange (c) American Safety Code (d) American Standard Computer Information
Answer: a
How many bits are there in the standard or basic ASCII code?
(a) 7 bits (b) 8 bits (c) 4 bits (d) 16 bits
Answer: a
How many bits are there in the Extended ASCII code?
(a) 8 bits (b) 7 bits (c) 16 bits (d) 32 bits
Answer: a
How many unique characters can be specified by the basic ASCII code?
(a) 128 (b) 256 (c) 64 (d) 512
Answer: a
What is the decimal value of 'A' in ASCII code?
(a) 65 (b) 66 (c) 97 (d) 98
Answer: a
What is the decimal value of 'a' in ASCII code?
(a) 97 (b) 98 (c) 65 (d) 66
Answer: a
What is the decimal value of '0' (zero) in ASCII code?
(a) 48 (b) 49 (c) 0 (d) 32
Answer: a
What are the 3 leftmost bits of the ASCII-7 code called?
(a) Zone bits (b) Digit bits (c) Parity bits (d) Sign bits
Answer: a
Which code is most widely used in microcomputers?
(a) ASCII (b) EBCDIC (c) BCD (d) Gray
Answer: a
What is the extra 8th bit in the ASCII-8 code called?
(a) Parity bit (b) Zone bit (c) Sign bit (d) Stop bit
Answer: a
EBCDIC Code
What is the full form of EBCDIC?
(a) Extended Binary Coded Decimal Interchange Code (b) Electronic Binary Code (c) Extended Bit Code (d) Interchange Code
Answer: a
How many bits does the EBCDIC code use?
(a) 8 bits (b) 7 bits (c) 16 bits (d) 4 bits
Answer: a
How many unique characters can be represented by the EBCDIC code?
(a) 256 (b) 128 (c) 64 (d) 512
Answer: a
In which computers is the EBCDIC code typically used?
(a) Mainframe (b) Micro (c) Laptop (d) Pocket
Answer: a
How many zone bits are there in the EBCDIC code?
(a) 4 (b) 3 (c) 2 (d) 1
Answer: a
How many digit bits are there in the EBCDIC code?
(a) 4 (b) 3 (c) 5 (d) 8
Answer: a
Unicode
What is the full form of Unicode?
(a) Universal Code (b) Unique Code (c) United Code (d) User Code
Answer: a
How many bits does a standard Unicode representation typically use?
(a) 16 bits (b) 8 bits (c) 7 bits (d) 32 bits
Answer: a
What is the maximum number of characters that can be represented by a 16-bit Unicode?
(a) 65536 (b) 256 (c) 128 (d) 4294967296
Answer: a
Which coding system allows characters from all global languages to be encoded?
(a) Unicode (b) ASCII (c) EBCDIC (d) BCD
Answer: a
Which code is required to use the Bengali language on computers?
(a) Unicode (b) ASCII (c) EBCDIC (d) BCD
Answer: a
In which year was the Unicode Consortium formed?
(a) 1991 (b) 1981 (c) 2000 (d) 1975
Answer: a
What is the relationship between ASCII and Unicode?
(a) First 128 codes match (b) No match at all (c) Entirely identical (d) Completely opposite
Answer: a
What is the primary advantage of Unicode?
(a) Multilingual support (b) Compact size (c) Faster speed (d) Less memory
Answer: a
UTF-8 is a widely used encoding form of which system?
(a) Unicode (b) ASCII (c) BCD (d) EBCDIC
Answer: a
Which code is most popular across the internet and web pages?
(a) Unicode (b) EBCDIC (c) BCD (d) Gray code
Answer: a
What is the process of converting characters or numbers into binary in a computer system called?
(a) Coding (b) Decoding (c) Encryption (d) Modulation
Answer: a
What type of data does a code primarily process?
(a) Alphanumeric (b) Analog (c) Natural (d) Complex
Answer: a
Which code is used exclusively to represent numbers?
(a) Numeric (b) Alphanumeric (c) ASCII (d) Unicode
Answer: a
Which code represents letters, digits, and special characters?
(a) Alphanumeric (b) Numeric (c) Gray (d) Excess-3
Answer: a
Which of the following is NOT an alphanumeric code?
(a) BCD (b) ASCII (c) EBCDIC (d) Unicode
Answer: a
BCD Code
What is the full form of BCD?
(a) Binary Coded Decimal (b) Bit Coded Decimal (c) Basic Coded Decimal (d) Binary Count Decimal
Answer: a
How many bits does a BCD code typically consist of?
(a) 4 bits (b) 7 bits (c) 8 bits (d) 16 bits
Answer: a
Which code directly converts each decimal digit into binary?
(a) BCD (b) ASCII (c) Gray (d) Excess-3
Answer: a
Which is the most widely used variation of BCD code?
(a) BCD 8421 (b) BCD 7421 (c) BCD 5421 (d) BCD 2421
Answer: a
What is the BCD (8421) value of the decimal number 9?
(a) 1001 (b) 1111 (c) 0101 (d) 1010
Answer: a
How many bits will the BCD value of the decimal number 25 contain?
(a) 4 bits (b) 8 bits (c) 16 bits (d) 2 bits
Answer: b
What is the maximum number of states that can be represented by a BCD code?
(a) 10 (b) 16 (c) 8 (d) 4
Answer: b
Which is the BCD representation of the decimal number 7?
(a) 0111 (b) 1110 (c) 0000 (d) 1000
Answer: a
What type of code is BCD?
(a) Numeric (b) Alphanumeric (c) Unweighted (d) Signed
Answer: a
ASCII Code
What is the full form of ASCII?
(a) American Standard Code for Information Interchange (b) Asian Standard Code for Information Interchange (c) American Safety Code (d) American Standard Computer Information
Answer: a
How many bits are there in the standard or basic ASCII code?
(a) 7 bits (b) 8 bits (c) 4 bits (d) 16 bits
Answer: a
How many bits are there in the Extended ASCII code?
(a) 8 bits (b) 7 bits (c) 16 bits (d) 32 bits
Answer: a
How many unique characters can be specified by the basic ASCII code?
(a) 128 (b) 256 (c) 64 (d) 512
Answer: a
What is the decimal value of 'A' in ASCII code?
(a) 65 (b) 66 (c) 97 (d) 98
Answer: a
What is the decimal value of 'a' in ASCII code?
(a) 97 (b) 98 (c) 65 (d) 66
Answer: a
What is the decimal value of '0' (zero) in ASCII code?
(a) 48 (b) 49 (c) 0 (d) 32
Answer: a
What are the 3 leftmost bits of the ASCII-7 code called?
(a) Zone bits (b) Digit bits (c) Parity bits (d) Sign bits
Answer: a
Which code is most widely used in microcomputers?
(a) ASCII (b) EBCDIC (c) BCD (d) Gray
Answer: a
What is the extra 8th bit in the ASCII-8 code called?
(a) Parity bit (b) Zone bit (c) Sign bit (d) Stop bit
Answer: a
EBCDIC Code
What is the full form of EBCDIC?
(a) Extended Binary Coded Decimal Interchange Code (b) Electronic Binary Code (c) Extended Bit Code (d) Interchange Code
Answer: a
How many bits does the EBCDIC code use?
(a) 8 bits (b) 7 bits (c) 16 bits (d) 4 bits
Answer: a
How many unique characters can be represented by the EBCDIC code?
(a) 256 (b) 128 (c) 64 (d) 512
Answer: a
In which computers is the EBCDIC code typically used?
(a) Mainframe (b) Micro (c) Laptop (d) Pocket
Answer: a
How many zone bits are there in the EBCDIC code?
(a) 4 (b) 3 (c) 2 (d) 1
Answer: a
How many digit bits are there in the EBCDIC code?
(a) 4 (b) 3 (c) 5 (d) 8
Answer: a
Unicode
What is the full form of Unicode?
(a) Universal Code (b) Unique Code (c) United Code (d) User Code
Answer: a
How many bits does a standard Unicode representation typically use?
(a) 16 bits (b) 8 bits (c) 7 bits (d) 32 bits
Answer: a
What is the maximum number of characters that can be represented by a 16-bit Unicode?
(a) 65536 (b) 256 (c) 128 (d) 4294967296
Answer: a
Which coding system allows characters from all global languages to be encoded?
(a) Unicode (b) ASCII (c) EBCDIC (d) BCD
Answer: a
Which code is required to use the Bengali language on computers?
(a) Unicode (b) ASCII (c) EBCDIC (d) BCD
Answer: a
In which year was the Unicode Consortium formed?
(a) 1991 (b) 1981 (c) 2000 (d) 1975
Answer: a
What is the relationship between ASCII and Unicode?
(a) First 128 codes match (b) No match at all (c) Entirely identical (d) Completely opposite
Answer: a
What is the primary advantage of Unicode?
(a) Multilingual support (b) Compact size (c) Faster speed (d) Less memory
Answer: a
UTF-8 is a widely used encoding form of which system?
(a) Unicode (b) ASCII (c) BCD (d) EBCDIC
Answer: a
Which code is most popular across the internet and web pages?
(a) Unicode (b) EBCDIC (c) BCD (d) Gray code
Answer: a