Networks Flashcards
What is synchronise data transition
The sender and receiver are synchronised using a common clock signal
Whats does HTTP stand for?
hyper text transfer protocol
what is the s at the end of HTTPS? and what does it do?
The S stands for secure and it makes the communications secure
whats the http method for the SQL insert
POST
whats the http method for the SQL retrieve
GET
whats the http method for the SQL update
PUT
whats the http method for the SQL Delete
DELETE
what is fibre optic cable
A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. They’re designed for long-distance, high-performance data networking, and telecommunications.
what are the different types of severs
file, web, email, print, database
what is in a packet
source address, destination address, data and crc
what does Domain name server mean
A server that works to resolve domain names to corresponding IP addresses.
what does URL stand for
uniform resource locator
what is the uniform resource locator
The URL specifies both the location of the resource and the protocol that will be used to access the resource
what does the The Scheme refer to
this is the protocol in the URL for example https
what is the Fully Qualified Domain Name (FQDN) on the current URL
this is the www.brainscapes.com in the current URL
what is the Domain names www.brainscape.com
brainscape
what is the subdomain on www.brainscape.com
www
what is the path on this URL brainscape.com/dashboard/a-level-comp-sci/networks/cards/this-card
the paths is /dashboard/a-level-comp-sci/networks/cards
as this is what helps the host find the resource you will notice the current card isnt included in the path as this is the resouce
what is the domain name hierarchy
its the identifer at the end of the FQDN for example .com or .uk or .tv
https://isaaccomputerscience.org/concepts/net_internet_domain_name_system?examBoard=aqa&stage=a_level
whats a DNS
a domain name sever look up is where a domain name server searches the internet registrars to find the webpage you are after
what is POP
pop is the post office protocol is an application layer protocol and retrieves an email from a sever to a client (the email is deleted off the sever afterwards)
what does RTS/CTS stand for
Request To Send / Clear To Send
what instructions does RTS/CTS follow
check if channel is idle:
if False:
wait random time
else:
send request to send
wait for CTS
if received:
send Msg
What does NIC stand for
network interface card
what does the WAP stand for
wireless access point
what does a WAP do
It manages wireless connections to a local area network.
whats serial transition
this is where one bit it sent one after another
whats parallel transmission
this is where several bit are sent at the same time over there their own dedicated wires
whats a disadvantage of parallel transition
This type of transmission is only reliable over short distances, so it is mainly used inside a computer and in some early peripherals.
define bandwidth
The amount of data that can be transmitted in a given time.
what does CSMA/CA stand for
what does CSMA/CA do
CSMA/CA is a protocol used in wireless networking. It makes sure that network collisions (when two devices attempt to communicate at the same time) are avoided.
