Topic 1 Flashcards
What is a server?
Servers are computers that provide information to end devices.
Servers respond to requests from clients.
Explain the Client - Server relationship.
Clients are computers that send requests to the servers to retrieve information.
This relationship is fundamental to network communication.
What is an end device?
End devices are where a message originates from or where it is received.
Examples include computers, laptops, and printers.
List three examples of end devices.
- Computers
- Laptops
- Printers
What are two functions of an intermediary network device?
- Connect end devices to the network
- Determine the path that the messages take through the network
Name some examples of intermediary devices you must pass through to access the internet.
- Router
- LAN switches
- Wireless routers
Describe the first type of transmission media used by networks.
Metal wires within cables: Data is encoded in electrical impulses.
This type of media is commonly used in traditional wired networks.
Describe the second type of transmission media used by networks.
Fiber-optic cable: Data is encoded into pulses of light.
Fiber-optic cables provide high-speed data transmission.
Describe the third type of transmission media used by networks.
Wireless transmission: Data is encoded through specific frequencies of electromagnetic waves.
This allows for mobility and flexibility in network connections.
What is physical topology?
Diagrams illustrate the physical location of intermediary devices and cable installation.
It focuses on the physical layout of the network.
What is logical topology?
Diagrams illustrate devices, ports, and the addressing scheme of the network.
It focuses on how data flows within the network.
Define the Internet.
Worldwide collection of interconnected LAN’s and WAN’s.
The Internet enables global communication and data exchange.
What is an intranet?
A private collection of LAN’s and WAN’s accessible only to the organization’s members or others with authorization.
What is an extranet?
Provides secure access for individuals who work for a different organization that need access to data on their networks.
List six Internet access technologies used for home/small office.
- FTTP/FTTH
- Cable
- DSL
- Cellular
- Satellite
- Dial-up telephone
What is the difference between a traditional dedicated network and a converged network?
Traditional networks use different technologies with different set of rules and standards; converged networks deliver data, voice, and video over the same infrastructure using the same set of rules and standards.
List three characteristics of a Fault Tolerant Network.
- Redundancy
- Limits the impact of failure
- Fault detection and monitoring
How is QoS used to make congested networks more efficient?
It ensures that priorities are matched with the type of communication and its importance to the organization and manages the flow of data and voice traffic.
What are the three goals of network data security?
- Confidentiality: only intended recipients can read the data
- Integrity: assurance that the data has not been altered during transmission
- Availability: assurance of timely and reliable access to data for authorized users
