Explanation

A Denial of Service attack is a cyberattack in which an attacker overloads a network, server, or system with traffic,

Making it unavailable to legitimate users.

Common types include:

• Flood attacks
• Ping of Death
• SYN Flood

Last updated 15-feb-2026

Explanation

• ICMP (Internet Control Message Protocol) is used by network devices to:

  • Report errors (e.g., unreachable host)

  • Test network connectivity (e.g., ping command)

It does not carry user data like HTTP or FTP; it is solely for control and diagnostic purposes.

Last updated 15-feb-2026

Explanation

Maximum Transmission Unit refers to the largest size of a data packet

That can be transmitted over a network medium.

If a packet is larger than the MTU, it must be fragmented into smaller packets.

Example: Ethernet typically has an MTU of 1500 bytes.

Last updated 15-feb-2026

Explanation

The F5 key is primarily used to refresh or reload web pages in browser

Additional information

Shift + F5: Starts PowerPoint slideshow from the current slide
F6 – Moves the cursor to the address bar

F7 – Used to spell check and grammar check

F8 – Used to access the boot menu in Windows 

Last updated 15-feb-2026

Explanation

Explanation

The basic structure of a computer was developed by John von Neumann in 1945. 

It is known as the von Neumann architecture or von Neumann model,

He was the Hungarian-American mathematician and physicist 

Last updated 15-feb-2026

Explanation

MS Access has primary one key (or a single composite key) per table.

This key must be a unique, non-null field or a combination of fields

That identifies each record, acting as the primary identifier for database relationships. 

Last updated 15-feb-2026

Explanation

Regarding deadlock recovery techniques, is Process Termination. 

It is considered an "easy" technique regarding CPU management

Because it uses simple logic to break a deadlock cycle: 

Explanation

Google established (acquired and further developed) the Android system. 

Explanation

Virtual memory is a memory management technique

Used by operating systems (OS)

That extends a computer’s physical RAM by temporarily transferring data to disk storage.

Last updated 15-feb-2026