Networks Flashcards
Basic information about networks.
What are servers responsible for?
Servers provide information to end devices, such as email servers, web servers, and file servers.
What do clients do in a network?
Clients send requests to servers to retrieve information, like fetching web pages from web servers or emails from email servers.
Define Peer-to-Peer network.
In a Peer-to-Peer network, a device can act as both a client and a server. This design is recommended for small networks.
What are advantages of Peer-to-Peer networks?
Easy setup
Less complex
Lower cost
Used for simple tasks like file transfers and printer sharing.
Name some disadvantages of Peer-to-Peer networks.
No centralized administration
Not as secure
Not scalable
Slower performance
What is an end device in a network?
An end device is where a message originates from or where it’s received. Data flows through the network, arriving at an end device.
What are intermediary network devices responsible for?
Intermediary devices interconnect end devices. They regenerate signals, maintain network pathways, and notify other devices of errors.
How is communication across a network carried out?
Communication is carried through network media, such as metal wires (electrical impulses), fiber-optic cables (pulses of light), or wireless transmission (modulated electromagnetic waves).
What are network diagrams used for?
Network diagrams (topology diagrams) use symbols to represent devices in a network. Key terms include Network Interface Card (NIC), Physical Port, and Interface.
What’s the primary difference between LAN and WAN?
LAN (Local Area Network) interconnects devices in a limited area and is administered by one organization. WAN (Wide Area Network) connects LANs over larger areas and may be administered by service providers.
Define the Internet.
The Internet is a collection of interconnected LANs and WANs. LANs connect via WANs using various transmission methods.
What are IETF, ICANN, and IAB?
These groups help maintain the structure of the Internet: IETF (Internet Engineering Task Force), ICANN (Internet Corporation for Assigned Names and Numbers), IAB (Internet Architecture Board).
What are intranets and extranets?
Intranets are private networks within an organization, using Internet technologies.
Extranets allow controlled access to certain parts of an organization’s network by external users.
