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Computing > 1.3.2 > Flashcards

1.3.2 Flashcards

1
Q

modes of connection

A

-wired connection
-wireless connection

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2
Q

what is wired connection?

A

connected with physicals

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3
Q

examples of wired connection

A

ethernet

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4
Q

what is wireless connection?

A

connected using wireless technology

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5
Q

examples of wireless connection

A

Wi-Fi and Bluetooth

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6
Q

what is ethernet?

A

family of networking rules or protocols used in LANs

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7
Q

benefits of ethernet

A

-higher bandwidth which allows transmission of lots of data
-avoids data collisions and has less interference
-difficult for unauthorised users to intercept data
-secure, stable and reliable connections
-faster speed and suitable for long distance

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8
Q

drawbacks of ethernet

A

-expensive to set up
-can’t instantly move a device
-requires more time to install
-has too many cables lying around

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9
Q

different types of transmission media

A

-twisted pair cable
-coaxial cable
-fibre optic cable (made of glass)

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10
Q

drawbacks of WAP

A

-bandwidth stealing
-confidentiality

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11
Q

benefits of WAP

A

-portable
-easy to use
-fast and efficient

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12
Q

is ethernet a protocol?

A

yes

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13
Q

does ethernet uses wireless transmission data?

A

no

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14
Q

can ethernet transmit data at speeds of up to 100 Gbits per second?

A

yes

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15
Q

how many bits long is IPv4?

A

32 bits

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16
Q

what is IPv4 made up of?

A

-network identifier (identifies the network the traffic needs to go to, first three bytes)
-host identifier (host device where the traffic needs to go to, last byte)

17
Q

how many bits long is IPv6?

A

128 bits

18
Q

IP address

A

-assigned permanently by administrator
-to conserve IP addresses they often assigned dynamically by the network when a device connects and change over time to allow reuse (dynamic task configuration protocol)
-networks will often have their own subnet address

19
Q

MAC address

A

-media access control address
-used to route the frames on a LAN
-usually displayed as a 12 digit hexadecimal number
-devices may have two MAC addresses, one for wired and ne for wireless
-every MAC address is unique and unchangeable

20
Q

protocols

A

set of rules that define how devices communicate

21
Q

TCP / IP

A

Transmission Control Protocol / Internet Protocol

22
Q

standards

A

allow hardware and software to interact across different manufacturers

23
Q

what are the different protocols?

A

-TCP (Transmission Control Protocol)
-IP (Internet Protocol)
-HTTP (Hyper Text Transfer Protocol)
-FTP (File Transfer Protocol)

24
Q

TCP

A

-how messages are broken up into packets and then reassembled
-detects errors and resends lost packets

25
Q

IP

A

-addresses packets
-identifies location of a device on the internet and routes the individual packets from source to destination

26
Q

HTTP

A

used for accessing and receiving web pages in the form of HTML files on the internet

27
Q

FTP

A

used when transferring computer files between client and server

28
Q

what are the email protocols?

A

-POP (Post Office Protocol)
-IMAP (Internet Messaging Access Protocol)
-SMTP (Simple Mail Transfer Protocol)

29
Q

POP

A

-receives and holds emails
-creates local copies of emails and deletes the originals

30
Q

IMAP

A

-stores email messages on server
-organises messages into folders
-allows simultaneous access by multiple clients

31
Q

SMTP

A

sending emails across the internet

32
Q

differences between POP and IMAP

A

POP: -works best with one computer to check email
-emails are downloaded and stored on computer you use
-sent email is stored locally on your computer not on email server
IMAP: -can use multiple computers / devices to check emails
-emails stored on the server and device synchronises with server
-sent email remains on the server so can be accessed from any device

Computing (26 decks)

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