Difficult IT Concepts Quiz

Which memory hierarchy level has the fastest access time?

• RAM

• Cache

• Hard Disk

• SSD

What is the primary function of the Northbridge in a computer system?

• Managing power supply

• Controlling the CPU clock speed

• Connecting the CPU to high-speed components

• Handling peripheral connections

The instruction cycle consists of which two primary phases?

• Decode & Store

• Fetch & Execute

• Read & Write

• Load & Process

Which scheduling algorithm ensures each process gets an equal time slice in execution?

• First Come, First Served (FCFS)

• Shortest Job Next (SJN)

• Round Robin

• Priority Scheduling

What is the primary function of a hypervisor in virtualization?

• Encrypt virtual machines

• Allocate resources between virtual machines

• Increase CPU speed

• Manage file storage

In Linux, which command is used to change file permissions?

• chmod

• chperm

• chown

• lsattr

The OSI model consists of how many layers?

• 5

• 6

• 7

• 8

Which network topology is the most fault-tolerant?

• Bus

• Star

• Mesh

• Ring

The primary function of ARP (Address Resolution Protocol) is to:

• Resolve domain names to IP addresses

• Map IP addresses to MAC addresses

• Encrypt network packets

• Filter network traffic

What is a zero-day vulnerability?

• A vulnerability with no known fix

• An attack lasting 24 hours

• A security flaw affecting only mobile devices

• A bug fixed within a day