what Im bad at in paper 1 Flashcards
how to increase performance other than cache, cores and clock speed
RAM size
size of SSD
GPU
define secondary storage
non volatiles external storage
how is sound stored
anplitude of sound wave is sampled at set intervals (44,000 per second)
which is converted into binary
what does two binary shfts to the right do
divides the number by 4
loses precision
what is a network protocol
a set of rules for communication
pros of star network topologies
easy to expand
one node can fall rest = fine
less data collisions
data doesnt have to be sent across
pros of star network topologies
easy to expand
one node can fall rest = fine
less data collisions
data doesnt have to be sent across
name three errors that could be made to damage the network and the procedre to fix them
leaving phisical access to the servers
–have the servers locked and key cards given to aurthorised personel
harmful softwrae may be installed
–user access levels so unauthorised staff cannot install software
bring in external files
–no extrernal devises on network
what is a WAN
computrer connected together over a large geographical area
Pros to cloud
easy to increase storage no extra hardware needed no specialist knowledge needed auto backups (tthird party backs up data) dont need infrastructure IN QUESTION CONTEXT
name suitable threats and their counter measures
ransomware - anti malware spyware - anti-spyware SQL - suitable input sanitisation social engineering(people weakpoint) - education hardware failure - backups
name a device to connect a home network to the internet
Router
what wifi frequency is short range
5 GHz
ways to improve wireless network connection
add sgnal ooster
move WAP closer
remove obstructions
why use a peer - peer server
cheaper to set up devices on network are qual one device can go down and the network would still work decentralised no specialist knowledge easy to add devices to it
