#1
What does the symbol '&' represent in programming languages?
Bitwise AND operator
ExplanationPerforms a bitwise AND operation between two numbers.
#2
In HTML, what does the ' ' tag stand for?
Break
ExplanationInserts a line break or blank line in text.
#3
What does the symbol '@' commonly represent in email addresses?
At
ExplanationSeparates the user's name from the domain in an email address.
#4
What does the acronym HTML stand for?
Hypertext Markup Language
ExplanationA language used to create and design web pages.
#5
What does the symbol '#' typically represent in programming languages?
Hash or pound sign
ExplanationUsed to denote comments or preprocessor directives.
#6
What is the purpose of the 'git clone' command in Git?
To clone a repository from a remote server
ExplanationCopies a repository from a remote server to the local machine.
#7
Which encryption algorithm is widely used for securing internet communication?
AES (Advanced Encryption Standard)
ExplanationEncrypts data for secure transmission over the internet.
#8
In mathematics, what does the symbol '∑' represent?
Summation
ExplanationIndicates the sum of a series of numbers.
#9
Which programming language is often associated with the symbol '++' to increment a variable?
C++
ExplanationA programming language that supports incrementing variables using '++'.
#10
What is the purpose of the 'grep' command in Unix/Linux?
Global search regular expression and print
ExplanationSearches for patterns within files and prints matching lines.
#11
What is the purpose of the 'chmod' command in Unix/Linux?
Change file permissions
ExplanationModifies the access permissions of files and directories.
#12
Which cipher involves shifting the letters of the alphabet by a fixed number of positions?
Caesar cipher
ExplanationEncrypts a message by shifting the letters of the alphabet by a fixed amount.
#13
In circuit diagrams, what does the symbol 'R' usually represent?
Resistor
ExplanationA component that restricts the flow of electrical current.
#14
Which cryptographic hash function is commonly used for password hashing?
bcrypt
ExplanationA cryptographic hash function designed for password hashing.
#15
In networking, what does the symbol '/' represent in IP addresses (e.g., 192.168.1.1/24)?
Subnet mask
ExplanationSpecifies the network prefix length or subnet mask.