Computer Science Quiz

Which of the following is used to organize data efficiently for easier sorting and searching?

• Linked List

• Array

• Stack

• Queue

What is the primary characteristic of Dynamic RAM (DRAM)?

• Uses flip-flops to store data

• Data is volatile and needs periodic refreshing

• Faster and more reliable than SRAM

• Non-volatile memory

Which of the following statements about memory cells in DRAM is true?

• They store data in capacitors, which require refreshing

• They use flip-flops to store data

• Data remains intact even after power loss

• They are part of non-volatile memory

What is the primary function of a chip select (CS) signal in digital systems?

• To control clock synchronization

• To activate or deactivate specific chips or peripherals

• To manage power supply to devices

• To reset the system

What is the main advantage of RAMBUS over traditional SDRAM?

• It transfers data one bit at a time

• It uses a 64-bit data bus

• It transfers data in larger blocks, increasing bandwidth

• It is less expensive to manufacture

Which type of error occurs when the program runs but produces incorrect results due to logical flaws?

• Syntax Error

• Compilation Error

• Logic Error

• Runtime Error

In object-oriented programming, which feature allows a derived class to inherit properties and behaviors from a base class?

• Polymorphism

• Inheritance

• Encapsulation

• Abstraction

Which of the following is true about a foreign key in a database?

• It uniquely identifies each record in a table

• It establishes relationships between tables

• It cannot accept NULL values

• It must be defined in the same table

What is the purpose of the SQL command "SELECT"?

• To delete data from a table

• To retrieve data from a table

• To update existing records

• To create a new table

What is the primary difference between a virus and a worm in terms of their ability to spread?

• A virus spreads through email attachments; a worm spreads through networks

• A virus requires a host program to spread, while a worm does not

• A virus cannot replicate itself; a worm can

• A virus spreads only in local networks; a worm can infect the entire internet