Network Security & Protocols
What should you do to make your router more secure?
Change the SSID and default password.
The IEEE established which wireless communication standards?
802.11 (Wi-Fi) standards.
What is the main limitation of ASCII?
It only supports 128 characters, mostly English-based.
What does a switch do in a network?
Connects devices within a LAN and directs data to the correct device.
What is the smallest unit of measurement for a computer?
A bit.
Why is WEP considered insecure today?
It can be easily hacked due to weak encryption.
Why do most Wi-Fi routers support multiple standards?
To ensure compatibility with both older and newer devices.
What does Unicode provide that ASCII does not?
Support for emojis and characters from all languages.
What does a router do?
Routes data between different networks and manages internet traffic.
What is binary used for?
Representing all computer data using 0s and 1s.
What is the purpose of a firewall in a LAN?
To block unauthorized access and protect the network.
What is the role of a modem?
It converts signals from the ISP into a form devices can understand.
What is the main reason for transitioning from IPv4 to IPv6?
IPv4 addresses were running out.
What is the function of a network cable tester?
It checks whether network cables are functioning correctly.
How do computers use binary to represent information?
By using combinations of 0s and 1s to encode data.
Which port number is used for HTTP?
Port 80.
What is the main function of network protocols?
They create common rules for devices to communicate effectively.
How many bits are in an IPv4 address?
32 bits.
What does a NIC (Network Interface Card) do?
It connects a computer to a network, allowing communication.
What is a Local Area Network (LAN)?
A network that connects devices within a limited area like a home or school.
What is the primary purpose of a VPN for remote users?
To create a secure, encrypted connection to a private network over the Internet.
What is a SOHO network?
A Small Office/Home Office network designed for limited users and devices.
What does a MAC address identify?
It uniquely identifies a device’s network interface hardware.
What are the three types of cables that carry Internet data?
Fiber optic, coaxial, and twisted pair copper cables.
What is a network?
A group of connected computers that share information and resources.