Explanation

Following are the functions of a operating system.

1. Allocates resources
2. Monitor Activities
3. Manages disks and files

Explanation

The Arithmetic and Logic Unit (ALU) performs logical operations in the Central Processing Unit (CPU).

An arithmetic-logic unit is the part of a central processing unit that carries out arithmetic and logic operations.

Explanation

A firewall is a software or firmware that prevents unauthorized access to a network.

A firewall inspects incoming and outgoing traffic using a set of rules to identify and block threats.

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Explanation

•  The National Security Council (NSC) is a federal institution body chaired by The Prime Minister of Pakistan
• ***
• Formed------------>March 25, 1969
• Headquarters ------------>Prime Minister's Office
• Agency executives------------>Shehbaz Sharif Prime Minister of Pakistan (Chairman) Iftikhar Babar (Federal Secretary National Security Division)
• Parent agency------------> Prime Minister's Office
• on July 29, 2020, the United Nations (Security Council) Amendment Bill, 2020, was passed by the National Assembly
  

Explanation

Explanation

A pointing device is an input interface that allows a user to input data to a computer using physical gestures - point, click, and drag.

Mouse, Light-pen, Trackball & Joystick are examples of Pointing Devices.

Explanation

Sir Alexander Fleming noticed that a mold called Penicillium notatum accidentally grew in one of his petri dishes and killed the surrounding Staphylococcus bacteria

Penicillin was discovered by Alexander Flaming In 1928.

Penicillin was the first true antibiotic.

The first patient Albert Alexander, a 43-year-old policeman, was treated with penicillin on 12 February 1941.

Alexander Flaming determined that penicillin had an antibacterial effect and published his findings in 1929.

Explanation

In the poem, the upper leaves are described as receiving the rain first.

Once they are full, they pass the water drop by drop to the lower leaves, symbolizing sharing and care in nature.

Explanation

When we use under as a preposition,

it is similar to below.

We use under to talk about something that is below or lower than something else:

The cat is under the table.

Explanation

She has a big red ball

In English, when using multiple adjectives, we typically follow this order:

Opinion → Size → Age → Shape → Color → Origin → Material → Purpose + Noun

So in this case:

big = size

red = color

Correct order: "big red ball"