Parallel data transmission would most likely be used for?

Saving Work on a USB Flash Drive

Which of these are valid reasons for using subprograms to structure a program? (select all that apply)

Different programmers can work on different parts of the program

Can test subprograms independently

Avoids need to use local variables

Abstraction is a recognised technique of Computational Thinking. Which of these is the best definition of abstraction?

The process of removing or hiding unnecessary detail from a problem

Creating a set of logical steps that when followed achieve a particular task

Breaking a problem down into several layers of smaller and simpler subproblems

Exploiting the recurrence of patterns in data to make processing more efficient

For which algorithm would it be best to use a conditional loop?

Checking if an item is in a list

Finding largest number in a list

Calculating average of a list of numbers

Counting occurrences of an item in a list

Which of the following statements is true about verification? There are 2 correct answers.

Verification is the process of entering the data twice and comparing the two entries

Verification won't stop you entering the wrong data, it will just check you haven't mistyped the data

Verification will stop you entering the wrong data

Verification will check your data is in the right range

Select all the valid non-physical means of securing a network ...

Authenticating username & password

Setting access control rights for users

Backing up file server data regularly

Installing and customizing firewall

Which of these are physical security measures?

Turning monitor screen away from window

Fingerprint scanner to unlock device

Two-step authentication using mobile phone

Choose all the ways in which computing technology is also helping to protect the environment...

Climate change - analysing data about global warming

Disaster alerts - providing early warning systems for tsunamis and earthquakes

Conservation - protecting endangered species and habitats using GPS and transponders

Energy consumption - making buildings more energy efficient

iGCSE Computer Science Quiz 2020

Quiz

•

Computers

•

9th - 10th Grade

•

Practice Problem

•

Hard

•

CCSS

8.EE.C.7B, HSF.IF.A.2

Standards-aligned

A McGarry-Thickitt

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iGCSE Computer Science Quiz 2020

108 questions

Transmission where data can only be sent in one direction only e.g. a computer to a standard monitor.

Data transmission in both directions simultaneously.

The rules that specify how data is transmitted.

The data transfer rate of a network.

Data transmission where data is transferred one bit at a time.

Data transmission where several bits of data (usually one byte) are transferred simultaneously.

What does USB stand for?

Which of these is not a cable used to transfer data?

Which of these is not a network protocol?

Parallel data transmission would most likely be used for?

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