Module 1: Networking Today Flashcards
What is Host Roles
Every computer on a network is called a host or end device
What is a Servers
Computers that provide information to end devices
Types of Servers
- Email servers
- Web servers
- File servers
What is a Client
Computers that send requests to the servers to retrieve information
Clients Examples
- Web page from a web server
- Email from an email server
What is a Peer-to-Peer
A peer-to-peer network is one in which two or more PCs share files and access to devices such as printers without requiring a separate server computer. It is possible to have a device be a client and a server in a Peer-to-Peer Network.
What is the advantages and the disadvantages of Peer-to-Peer
Peer-to-Peer Advantages
- Easy to set up
- Less complex
- Lower cost
- Used for simple tasks: transferring files and sharing printers
Peer to Peer Disadvantages
- No centralised administration
- Not as secure
- Not scalable
- Slower performance
What is Intermediary Network Devices
A device which interconnects end devices.
Intermediary Network Device Examples
- Switches
- Wireless
- Access points
- Routers
- Firewalls
What are the different Network Media types
Network Media
Communication across a network is carried through a medium which allows a message to travel from source to destination.
Media Types - Metal
- Metal wires within cables
- Uses electrical impulses
Media Types - Glass/ Plastic Fibers
- Glass or plastic fibers within cables (fiber-optic cable)
- Uses pulses of light
Media Types - Wireless Transmission
Uses modulation of specific frequencies of electromagnetic waves
What is a Physical Topology Diagrams and Logical Topology Diagrams
- Physical Topology Diagrams
Illustrate the physical location of intermediary devices and cable installation. - Logical Topology Diagrams
Illustrate devices, ports, and the addressing scheme of the network.
What are the Two most common types of networks
Two most common types of networks
- Local Area Network (LAN)
- Wide Area Network (WAN)
LANs and WANs - Network Infrastructures Vary Greatly in Terms of
- Size of the area covered
- Number of users connected
- Number and types of service available
LAN - Network Infrastructure
Spans a small geographical area
Interconnected end devices in a limited area
Provides high-speed bandwidth to internal devices
WAN - Network Infrastructure
Spans a wide geographical area
Interconnect LANs over wide geographical areas
Typically provide slower speed links between LANs
What are some examples of interconnections that service providers may offer
Interconnections are usually provided by service providers (SP) and may include:
- business DSL
- leased lines
- Metro Ethernet
What are the key characteristics of network architecture that must be considered
Network Architecture Characteristics - List
- Fault Tolerance
- Scalability
- Quality of Service (QoS)
- Security
What are the four types of clouds
The four types of clouds are public clouds, private clouds, hybrid clouds, and custom clouds.
What makes cloud computing possible
Cloud computing is made possible by data centers that provide server and storage services to organizations
What is Powerline Networking
Powerline Networking
Using a standard powerline adapter, devices can connect to the LAN wherever there is an electrical outlet by sending data on certain frequencies.
Allows devices to connect to a LAN where data network cables or wireless communications are not a viable option.
