Building networks: Network structure and security

binary:___________________?

• the number system that uses just two digits: 0 and 1; also known as 'base 2'
• a 7-bit binary code that represents all the keys on a standard keyboard
• data is transferred one bit at a time
• 8 bits (or 1byte) of data are transferred simultaneously

ASCII (American Standard Code for Information Interchange):_____________?

• a 7-bit binary code that represents all the keys on a standard keyboard
• data is transferred one bit at a time
• 8 bits (or 1byte) of data are transferred simultaneously
• Networked devices transmit binary data, which consists of 1s and Os. Eight bits of 1 or 0 make up a byte.The devices transmit data using a wired or wireless method, and need to be able to do this extremelyquickly, even for large amounts of data.

bit flip: _________________?

• when a single bit changes from 0 to 1, or 1 to 0, during transmission
• a type of network that communicates over a small geographical area, such as a single building
• a person responsible for the maintenance and security of a network
• a computer that offers a service to other devices on a network, such as file-sharing services and printer-sharing services

parallel transmission: ___________________?

• 8 bits (or 1byte) of data are transferred simultaneously
• data is transferred one bit at a time
• when a single bit changes from 0 to 1, or 1 to 0, during transmission
• temporary increase in power, often caused by lightning, which can damage computer hardware

serial transmission:______________?

• data is transferred one bit at a time
• 8 bits (or 1byte) of data are transferred simultaneously
• when a single bit changes from 0 to 1, or 1 to 0, during transmission
• a temporary increase in power, often caused by lightning, which can damage computer hardware

cyber-attack: _______________?

• the collective name for all types of attacks on a computer or computer network
• moving a file to a safe place where it cannot contaminate other files on the computer
• a type of spyware that increases the number of adverts a user has on their computer system, often displaying adverts as banners or pop-ups inside software and sometimes enticing users to click on links to insecure or malicious websites or downloads
• an application that is used to organise data that can then be stored, processed and accessed electronically

Wireless Wide Area Networks____________?

• that are often used for telecommunications by mobile devices using 3G, 4G and 5G. Devices connect to a 'mast' or 'tower', which can be done over a distance of up to 15 kilometres.
• Networked devices transmit binary data, which consists of 1s and Os. Eight bits of 1 or 0 make up a byte.The devices transmit data using a wired or wireless method, and need to be able to do this extremelyquickly, even for large amounts of data.
• a computer that offers a service to other devices on a network, such as file-sharing services and printer-sharing services
• a type of network that communicates over a small geographical area, such as a single building

WPAN:_____________?

• is a type of PAN that can be connected using wireless technology only. This is most often Bluetooth, as a PAN generally does not need to connect to a device further than 10 metres away.
• are often used in homes and in small businesses located in one building over a small geographical area. Here, devices connect to the WLAN using Wi-Fi, as the transmission distance of Wi-Fi is around 9 metres (or more without obstructions such as walls).
• are types of Wide Area Networks that are often used for telecommunications by mobile devices using 3G, 4G and 5G. Devices connect to a 'mast' or 'tower', which can be done over a distance of up to 15 kilometres.
• n application that is used to organise data that can then be stored, processed and accessed electronically

unauthorised:_____________?

• not allowed
• software that pretends to be something that it is not; trojans track keystrokes and mouse movements - even sometimes webcam
• a type of spyware that increases the number of adverts a user has on their computer system, often displaying adverts as banners or pop-ups inside software and sometimes enticing users to click on links to insecure or malicious websites or downloads
• moving a file to a safe place where it cannot contaminate other files on the computer

trojan: __________________?

• software that pretends to be something that it is not; trojans track keystrokes and mouse movements - even sometimes webcams
• a type of spyware that increases the number of adverts a user has on their computer system, often displaying adverts as banners or pop-ups inside software and sometimes enticing users to click on links to insecure or malicious websites or downloads
• moving a file to a safe place where it cannot contaminate other files on the computer
• how a user interacts with a product