OS & Management
What does GUI stand for?
Graphics User Interface
How does a Trojan trick users into installing surveillance?
It pretends to be something useful or safe, but secretly tracks keystrokes, mouse movements, or webcams.
What do the acronyms WPAN, WLAN, and WWAN stand for?
Wireless Personal Area Network, Wireless Local Area Network, and Wireless Wide Area Network.
How is data sent when a network uses parallel transmission?
Data is sent multiple bits at a time down several wires.
How many individual bits make up a single byte?
Eight.
What is the specific purpose of hardware drivers in an Operating System?
They teach the system how to interact with hardware, such as keyboards, monitors, and Network Interface Cards
How exactly does a firewall decide what data gets through and what gets blocked?
Administrators set rules (rule checking), and if data breaks a rule, it is blocked.
Give me 3 examples of Interference
Weather, trees, other signals, buildings
Why is serial transmission considered highly reliable?
Bits arrive in the correct order because they come one at a time and the signal is less prone to interference.
f the denary number for 'A' is 65 and 'B' is 66, what is the 8-bit binary code for the letter 'G'?
01000111
Who controls the authorises the activity on a network?
Administator
What type of malware covertly installs tools to display unwanted pop-up adverts?
Adware.
If you need to connect devices across a massive geographical area, which network classification must be used?
WAN
What are two real-world use cases for serial transmission?
USB cables and fibre-optic WAN links.
Which switches are ON for the binary code 00100010, and what denary number does this represent?
32 and 2
Where is a Network Operating System (NOS) typically installed?
It is usually installed on a server
What type of malicious software infects files, spreads across devices, and is often unwittingly downloaded from email attachments?
A virus.
What technology is utilized in a WLAN
Wi-Fi
Where is parallel transmission typically used
On internal computer buses, such as the connection from the CPU to RAM.
If the ASCII denary value for the lowercase letter 'b' is 98, what is its 8-bit binary representation?
01100010
What is utility software, and what is its use?
Utility software is a collection of programs designed for specific maintenance or security tasks. A NOS utilizes these programs to control activity within a network.
Where exactly do firewalls sit within a network architecture, and what is their function?
Firewalls sit between the LAN (Local Devices) and the WAN (The Internet). They examine all data entering and leaving the network.
what is the typical speed of a WWAN
The typical speed is 100 Mbps
Describe an Echo Check.
The sender compares the echo to the original data; if they match, the transmission was successful.
what is the binary code for J?
01101010