DTE T1 Flashcards
What is metadata?
Metadata is data about data. This is additional information that apps and devices exchange along with content, often without the user’s knowledge.
What is a hub?
A hub connects a number of computers together. Ports allow cables to be plugged in from each connected computer.
What is a router?
A router is a network device that directs data between different networks and manages internet traffic.
What is a network cable?
Used to connect together different devices. They have plastic plugs that connect into sockets on devices. The cable is made up of a number of copper wires. Data can be sent in both directions across a cable.
What is a server?
A server is a computer that stores, manages, and delivers data or services to other devices on a network.
What is a protocol?
A protocol is a set of rules or standards that govern how data is transmitted and communicated between devices on a network?
What is a Computer network?
A computer network is when two or more computers are connected together to allow them to communicate.
What is a Cesar Cipher?
A Caesar Cipher is a simple encryption method where each letter in the text is shifted by a certain number of positions in the alphabet.
What is encryption?
The process of encoding a plain text message in some secret way is called encryption
What is decryption?
Decryption is the process of converting encrypted data back into its original, readable form.
What is a cipher?
The generic term for a technique (or algorithm) that performs encryption
What is a wired connection?
Wired networks send data along ethernet cables. (See the PPT for the advantages and disadvantages of wired networks)
What is a wireless connection?
Wireless networks send data through the air using radio waves. E.g. Bluetooth, WiFi, 4G and 5G.
What is Bandwith?
Bandwidth is the amount of data that can be moved from one point to another in a given time. Higher bandwidth = more data per second. More bandwidth DOES NOT increase the speed.
What is BPS?
bps = bits per second.
Bandwidth is measured in bits per second. A bit is the smallest unit of data. Data transfer rates are now so good that bandwidth is usually measured in Megabits per second (Mbps). 1 Mb = 1 million bits
What is ISP?
ISP = Internet Service Provider.
ISPs provides individuals, households and companies access to the internet.
What is buffering?
This occurs when data is received slower than it is processed, causing delays similar to buffering during a Netflix film, indicating the need for more bandwidth.
What is the internet?
The internet is a global network of computers connected through physical hardware like cables, routers, and devices.
What is a computer virus
A computer virus is a harmful program that can spread from one computer to another, often causing damage or stealing information.
What is Multifactor authentication?
Authentication that requires three or more elements of secrecy
What is Two factor authentication?
Authentication that requires two elements of secrecy
What is Single factor authentication?
Authentication that requires only one element of secrecy
What is Random substitution cipher?
We match every letter of the alphabet to a random different letter of the alphabet.
What is Cracking encryption?
When you attempt to decode a secret message without knowing all the specifics of the cipher, you are trying to crack the encryption.
What is Phishing?
a technique that attempts to trick a user into providing personal information. That personal information can then be used to access sensitive online resources, such as bank accounts and emails
What is Ocean internet cabling?
Internet cables that lie on the seabed that connects continents. 99% of internet data is transmitted through cables under the oceans.
What is malware?
software intended to damage a computing system or to take partial control over its operation
What is a packet?
Networks send messages in small data units called “packets,” which may be split if the message is too large; each packet contains a portion of the message and unique IP addresses for the sender and receiver.
What is an IP address?
An IP address, made up of four numbers between 0 and 255, uniquely identifies a device on the internet, often representing the address of the router, such as 192.168.5.43.
What is IP?
IP = Internet Protocol.
A protocol to route the packets. Each device on the internet has an IP address that uniquely identifies it from all other devices.
What is TCP?
TCP = Transmission Control Protocol.
Splits the messages sent across the internet into smaller pieces called ‘packets’. Assembles the packets in the correct order at the receiver end
What is privacy?
In relation to the Internet, privacy is to be able to control who can see or use information about you.
What is keylogging?
the use of a program to record every keystroke made by a computer user in order to gain fraudulent access to passwords and other confidential information
What is digital footprint?
All of the information about us that can be found on the Internet is known as our digital footprint. E.g. records of the websites you visit, emails you send, information you submit to online services.
What a privacy policy?
A privacy policy is a statement that explains in simple language how an organisation or agency handles your personal information. Any organisation or agency in Australia that is covered by the Privacy Act 1988 must have a privacy policy.
What is packet payload?
Part of the message to be sent
What is a packet header?
A packet header contains the sender’s IP address, receiver’s IP address, total number of packets, and the sequence number of the specific packet, allowing the computer to reassemble the data in the correct order once all packets are received.
