Y8: Networking 1

Which type of cable transmits data faster?

• Copper

• Fibre optic

• Coaxial

• Twisted Pair

• Ethernet

What does PAN stand for in Networking?

• Personal Access Network

• Professional Area Network

• Private Access Network

• Public Access Network

• Personal Area Network

Which of the following is an example of a PAN?

• A home network

• A university network

• A corporate network

• A hospital network

• A network connecting different countries

What is a disadvantage of a wired network?

• Slower data transmission

• More vulnerable to interference

• Limited mobility

• More expensive to set up

• Difficult to maintain

What is the importance of firewalls in networks?

• To prevent unauthorized access

• To increase network speed

• To reduce network congestion

• To improve network stability

• To enhance data storage

What is the role of an echo check in data transmission?

• To check for transmission errors

• To ensure faster data transmission

• To enhance network security

• To reduce network congestion

• To improve network stability

Answer explanation

An echo check, also known as an echo test or loopback test, is a method used to detect errors in data transmission. It works by sending a test signal from one device to another and then receiving the signal back at the original device. The signal is then compared to the original to detect any errors that may have occurred during transmission.

What is a VPN used for in a network?

• To access restricted or censored websites or content

• To improve internet speed and performance

• To control and manage network traffic and bandwidth

• To help improve security and privacy

• To make you untrackable

What is the purpose of a check sum in data transmission?

• To improve network performance

• To encrypt data for security purposes

• To detect errors in transmitted data

• To compress data for more efficient transmission

• To increase network bandwidth

Answer explanation

A check sum is a simple mathematical calculation used to detect errors that may occur during the transmission of digital data. In this process, a small amount of extra data is added to the original message, and the receiver performs the same calculation to verify that the message has been received without errors. If the check sum at the receiver does not match the one sent by the sender, then an error has occurred during transmission, and the data needs to be resent. This helps ensure the accuracy and integrity of transmitted data.

What is the definition of hacking?

• Using technology to communicate with others

• Accessing a computer system or network without authorization

• Downloading and sharing files illegally

• Making changes to computer hardware

• Organizing and participating in online communities

Which of the following statements about hacking is true?

• hacking involves stealing money from bank accounts

• hacking is a form of cyber warfare between nations

• hacking is a growing problem, with more attacks each year

• Not all hackers are bad guys

• All of the above

Answer explanation

Explanation: Hacking refers to the unauthorized access or manipulation of computer systems and networks. While not all hacking is illegal, many types of hacking are criminal offenses. Hacking can be motivated by a variety of factors, including financial gain, political activism, or simply the thrill of the challenge. Statistics show that the number of hacking attacks is increasing each year, making it an ongoing concern for individuals, businesses, and governments alike.