Paper 1: Networks 2 Flashcards
What factor affects network performance by increasing congestion?
Number of Users
The more devices you have on a network, the slower the network may be.
Which transmission media is generally faster and more reliable?
Wired
Fibre optic cables are faster than copper cables.
What is defined as the time taken for data to be transferred from one device to another?
Latency
Latency affects the speed of data transfer in a network.
What measures the amount of data that the medium can transfer over a given period of time?
Bandwidth
Higher bandwidth allows for more data transmission.
What happens when devices try to communicate at the same time, causing transmission failures?
Error Rate
Signal collisions can lead to data transmission errors.
What are network standards?
Agreed requirements for hardware and software
They ensure compatibility among products from different manufacturers.
Why is Ethernet considered a standard?
Most manufacturers use it, allowing compatibility
Ethernet has high bandwidth, inbuilt security, and is cost-effective.
What is the definition of ‘The Cloud’?
Storing/accessing files using the internet
It allows for remote access to data and applications.
What is the hardware that allows the World Wide Web to function?
The Internet
It consists of computers connected together around the world.
What is hosting in the context of the internet?
Storing of files and data on a web server
The web server is referred to as a host if it contains the web page being accessed.
What does the acronym URL stand for?
Uniform Resource Locator
It is the unique address for a computer or webpage.
What is the role of a Domain Name Server?
Stores a list of IP addresses and associated URLs
All websites must be registered on a DNS to be accessible over the internet.
What is the Domain Name Service?
Use of multiple Domain Name Servers to find IP addresses
It returns the IP addresses to the user upon request.
Fill in the blank: A website is hosted on a web server which has an _______.
IP address
The IP address allows users to access the website.
What is the first step when a user types a URL in their browser?
The browser sends the URL to the DNS
This initiates the process of retrieving the associated IP address.
True or False: The user’s computer directly contacts the host server using the URL.
False
The user’s computer uses the IP address obtained from the DNS to contact the host server.
