Round 3 -hard

What is the purpose of a virtual memory in an operating system?

• To slow down the performance of the operating system

• To prevent the operating system from accessing the hard drive

• To increase the physical memory of the computer

• To allow the operating system to use a portion of the hard drive as if it were RAM

Which of the following is a Divide and Conquer Algorithm?

• Heap Sort

• Selection Sort

• Merge Sort

• Binary Sort

What is the role of a database administrator in a database management system?

• To manage the hardware of the computer system

• To design the user interface of the database system

• To write code for the database management system

• To manage and maintain the database, including security, performance, and data integrity.

Explain the concept of packet switching in computer networks.

• Data is transmitted in a continuous stream without any division

• Data is stored in a single large packet and transmitted across the network

• Data is transmitted in a circular fashion within the network

• Data is broken into small packets and transmitted independently across the network.

What is the function of a router in a computer network?

• Forwarding data packets between computer networks

• Encrypting data packets in a computer network

• Storing data packets in a computer network

• Generating data packets in a computer network

What is an example of iteration in C?

• for

• while

• do-while

• all of the above

What are the common types of cyber attacks and how can they be prevented?

• Using strong passwords, keeping software updated, being cautious of suspicious emails, and using antivirus software

• Clicking on every email attachment without caution

• Using weak passwords

• Leaving software outdated

What is the purpose of a cache memory in a computer system?

• To slow down the performance of the computer system

• To store frequently used data for quick access

• To increase the size of the hard drive

• To prevent the computer system from accessing the RAM

Explain the concept of inheritance in object-oriented programming.

• Inheritance is not a concept in object-oriented programming

• Inheritance involves creating new classes from existing classes

• Inheritance is only applicable to variables, not classes

• Inheritance is used for deleting classes in a program

What is the role of a firewall in network security?

• To allow all incoming and outgoing network traffic

• To prevent unauthorized access to or from a private network

• To slow down the network traffic

• To encrypt all network traffic