Network Types
What is a LAN?
A local area network (LAN) is a collection of devices connected together in one physical location
What does TCP stand for?
Transmission Control Protocol
What is an IP address?
Name a device that connects multiple networks.
Gateway
What is the OSI model?
The Open Systems Interconnection (OSI) model describes seven layers that computer systems use to communicate over a network.
What does WAN stand for?
What protocol is used for web traffic?
HTTP is the primary protocol for transmission of information across the internet.
What are the two types of IP addresses?
Private IP addresses and public IP address.
What is a router?
A router is a device that forwards data packets between computer networks, including internetworks such as the global Internet.
Name the first layer of the OSI model
Physical Layer
Define VPN
A Virtual Private network is a network architecture for virtually extending a private network across one or multiple other networks which are either untrusted or need to be isolated.
What is the purpose of DHCP?
Dynamic Host Configuration Protocol (DHCP) is used to dynamically assign IP addresses to each host on your organization's network.
What does subnetting do?
Through subnetting, network traffic can travel a shorter distance without passing through unnecessary routers to reach its destination.
What is the function of a switch?
A switch enables connected devices to share information and talk to each other.
What does TCP/IP stand for?
Transmission Control Protocol/Internet Protocol
What is the purpose of a MAN?
It combines the networks of multiple organizations, instead of being managed by a single organization.
Explain the function of FTP.
FTP (File Transfer Protocol) is a standard network protocol used for the transfer of files from one host to another over a TCP-based network, such as the Internet.
Define public IP address.
A public IP address is a unique numerical label assigned to each device connected to the Internet,.
Explain the role of a firewall.
A firewall is a security system designed to prevent unauthorized access into or out of a computer network.
Explain the transport layer.
The transport layer is responsible for ensuring that the data packets arrive accurately and reliably between sender and receiver.
What is the difference between a public and private network?
Public networks allow access to virtually anyone, while private networks strictly limit access to authorized users.
What is the difference between HTTP and HTTPS?
HTTPS uses TLS (SSL) to encrypt normal HTTP requests and responses, and to digitally sign those requests and responses.
How do you calculate the number of hosts in a subnet?
To calculate the number of possible hosts per subnet, use the formula 2h - 2, where h equals the number of host bits.
What is the purpose of a modem?
A modem is the device that allows your computers, smartphones, tablets, and other devices to connect to the internet.
How many layers are there in the OSI model?
SEVEN