Year 10 2021 Holiday Homework Discussion

Year 10 2021 Holiday Homework Discussion

Open Ended

 Identify an input device that could be present in a mobile phone.

Open Ended

Explain what is meant by an input device.

​Input Device

• ​inputs data to computer

• ​gives computer instructions

Multiple Choice

Arrange the procedure on how barcode works:

1   A barcode reader scans the barcode and translates it into a number

2   This number is usually a product number or code

3   Barcodes are a series by black vertical bars with white spaces between them.

4   The code can then be looked up in a database to find the rest of the product's data, such as it's price or manufacturer.  

• 1,2,3,4

• 1,3,2,4

• 3,1,2,4

• 3,4,1,2

How Barcode Works and What It Usually Stores

• ​Barcodes are a series by black and white vertical bars.

• ​A barcode reader scans the barcode and translates it into a number.

• ​This number is usually a product number or code.

• ​The code can then be looked up in a database to find the rest of the product's data

RAM and ROM​

​

Multiple Choice

It is like a whiteboard. It can be written to, read from, erased, or left as it is. It's contents are temporary.

• RAM

• ROM

Multiple Choice

It is volatile. It loses its contents when power is switched off.

• RAM

• ROM

Multiple Choice

It is like a book. Once written, it can usually be read from. Its contents are mostly permanent.

• RAM

• ROM

Multiple Choice

It is non-volatile. It retains its contents when the power is switched off.

• RAM

• ROM

Multiple Choice

It holds and runs programs data for processing in operating systems.

• RAM

• ROM

Multiple Choice

It tends to be much smaller in capacity.

• RAM

• ROM

Multiple Choice

It can range in capacity from a few bytes to several gigabytes.

• RAM

• ROM

Multiple Choice

It holds firmware and bootstraps.

• RAM

• ROM

Symmetric & Asymmetric Encryption​

​

Multiple Choice

Uses a public key and a private key to encrypt and decrypt messages

• Symmetric

• Asymmetric

Multiple Choice

The same key is used to encrypt and decrypt the encoded message

• Symmetric

• Asymmetric

Multiple Choice

Uses RSA algorithm to create public and private keys for the sender and receiver

• Symmetric

• Asymmetric

Multiple Choice

Uses password/passphrase

• Symmetric

• Asymmetric

Kinds of Software​

​

Open Ended

If a company gave you a free version of their software and encouraged  you to try and improve it and share it with online community, what kind of  software would this be?

QBasic Program​

​

Multiple Choice

Software that we have the freedom to run, share, copy and change.

• Free Software

• Freeware

• Shareware

Multiple Choice

A copy of software given to a person free of charge that cannt be changed or redistributed due to copyright.

• Free Software

• Freeware

• Shareware

Multiple Choice

A free trial or limited version of software.

• Freeware

• Shareware

• Free Software