Y7 Computing Review

An NIC must be present in a device to allow it to __________________________ with other devices.

Interfere

Communicate

Design

Command

A firewall uses a large database to detect harmful files in the computer and quarantines them.

True

False

Wannacry was a virus which damaged many computers worldwide

True

False

The aims of hackers are (Choose all correct answers)

Earn money illegally

Get personal information of others

Learn programming

Criminal damage

An indented line of code runs if a ___________________ is met

Answer

Condition

Solution

Pseudocode

A variable holds one value and this value cannot be changed at any point in the program

True

False

An integer datatype in python represents

A whole number

A number greater than 1

A decimal number

Alphabets

Pseudocode is the textual representation of an algorithm

True

False

Look at the folwchart on page 103 of your book. If the temperature is 15 degrees, what will be displayed by the computer?

Wear your gloves and scarf

Take your sunhat

You might need your coat

Keep looking at page 103. Which shape in the flowchart shows the elif statement in python?

First diamond

Second diamond

First parallelogram

Second parallelogram

What are the types of spyware

Trojan

Adware

Antivirus

Love_letter_to_you

Ahmed sends an 8 bit number from his computer to Adnan's. All the bits reach Adnan's computer at the same time. What kind of transmission is this?

Serial

Parallel

You decide to open an office in Jeddah with 10 computers. You make another office in USA. What kind of network will you use to keep both offices connected?

WLAN

WWAN

WPAN

When sending data from Jeddah to USA, you get a bit flip error. What does a bit flip error mean?

One bit is flipped/ reversed

0 changes to 1

1 changes to 0

All answers are correct

How can you check if the data you sent had an error or not?

Bit flip checking

Error checking

Interference detection

Echo checking

You used echo checking to detect a bit flip error. Very Good!. But you did not like this method. Why?

Echo checking takes too much time

Echo checking is expensive

Echo checking was not able to find where the error happened

Echo checking means too much data is sent over the network

Echo checking was not able to detect if error occurred.

Which of these is an antivirus software? See page 29 of book

MS Access

Avast

Endnote

Discord

The command line interface displays a ______________________ and the user types in their ________________ and presses __________________.

Prompt, code, Enter

Window, command, Enter

Window, code, spacebar

Prompt, command, Enter

Y7 Computing Review

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