Networking Flashcards
What is a network?
A network occurs when two or more computers are linked together and can share resources with each other.
What is the largest network on the planet?
The internet.
What is a PAN?
Personal Area Network, a convenient, one-person network.
What are examples of wireless PAN devices?
- Cell Phone Headsets
- Wireless Keyboards
- Wireless Mice
- Printers
- Barcode Scanners
- Game Consoles
What is a LAN?
Local Area Network, typically a few separate computers linked to printers and a shared internet connection.
What does a MAN cover?
A whole town or city.
What is a WAN?
Wide Area Network, covering a geographical area.
What is a VPN?
Virtual Private Network, a secure way of accessing a private network over a public one.
What is a NIC?
Network Interface Card, a special circuit that tells a node how to interact with the network.
What differentiates public and private networks?
The accessibility of the network to the public.
What is an Intranet?
A kind of private, internal Internet not accessible over the public Internet.
What is required to access files on a network?
Permissions must be granted.
True or False: Hacking involves gaining unauthorized access to a computer network.
True.
What is the function of a firewall?
To monitor and prohibit unauthorized incoming access attempts.
What do you need to create a network?
Nodes and connections (links) between them.
What is a MAC code?
A numeric identifier for each network card, similar to a phone number.
What is the Internet Backbone?
A set of well-defined connections including submarine cables.
What is the capacity range of submarine cables in the Internet Backbone?
Between 40Gbps and 10Tbps.
Fill in the blank: Each node on a network needs a special circuit known as a _______.
[Network Interface Card or NIC]
What type of connections are more common in offices?
Wired connections.
Why are wired connections generally preferred in offices?
They are generally faster and more secure.
What is the latency of the Internet Backbone cables?
Close to the speed of light and just a few milliseconds in duration.
