Karteikarten
Component 2 Flashcards
Karten in diesem Stapel (49)
- 1HardwareDescribes all physical, electronic and mechanical components of a computer system
- 2Control busTransmits the current operation
- 3Data busTransmits the actual data
- 4Where is Cache Memory located?On or near to the processor
- 5Which level of Cache is smallest?Level 1
- 6What is stored in Cache?Most frequently accessed files/ data
- 7RAMVolatile
Stores data/files currently in use - 8ROMNon-volatile
Contents permanently etched onto chip at manufacture - 9Typical contents of ROMBootstrap loader (instructs computer to run the OS)
- 10Disk CacheBetween CPU and disk
Holds data recently read from disk/about to be written to disk temporarily - 11Program CounterPoints to next instruction
- 12MARHolds address of currently accessed memory location
- 13MDRHolds data just read from memory
- 14CIRHolds the most recently fetched machine code instruction
- 15Parallel Processing2 or more processors working together to perform a single task
- 16Disadvantages of parallel processing1. More complex to write.
2. Concurrency introduces unique bugs e.g. Race Conditions.
3. Takes time to pass data between subtasks. - 17FragmentationFile is split up and stored on different parts of the hard disk
- 18DefragmentationConsolidation of data
Rearrangement of the disk to move all parts of the file to the same area - 19What command could improve the performance of an SSD?Trim
- 20What are SSDs made of?NAND flash
- 21How do Optical Drives work?Pits and lands etched by burning with lasers & read by reflecting lasers off the surface
- 22NetworkLinked set of computer systems capable of sharing power and resources
- 23HandshakingProcess of establishing if a device is ready to communicate
- 24The InternetNetwork of networks freely accessible
- 25ProtocolsRules established to allow devices to communicate
- 26HTTPHyperText Transfer Protocol
- 27Function of HTTPTransfer of multimedia webpages
- 28Importance of HTTPDisplays and formats webpages on different browsers as the author intended
- 29FTPFile Transfer Protocol
- 30Function of FTPTransfer of files over the internet
Built in error-checking - 31SMTPSimple Mail Transfer Protocol
- 32Function of SMTPAllows transfer of emails over a network.
Provides a standard way of messaging between servers. - 33TCP/IPTransmission Control Protocol/Internet Protocol
- 34Function of TCP/IPAllows networked computers to communicate
- 35Importance of TCP/IPSpecifies how signals are routed
Reduces need for gateways - 36IMAPInternet Message Access Protocol
- 37Importance of IMAPMessages are stored on the server to save space on the devices
- 38DHCPDynamic Host Control Protocol
- 39Function of DHCPAssigns dynamic IP addresses
Addresses no longer in use are returned to the pool to be reassigned - 40UDPUniversal Datagram Protocol
- 41Function of UDPSends datagrams with very few data recovery services
- 42Uses of UDPLive streams
Communication on games (Discord)
Video conferencing - 43Uses of voice inputVocabulary dictation
Command and control
Voiceprint recognition - 44Requirements for a wireless connection1. Network Interface Card
2. Wireless Access Point
3. Router
4. Switches - 45Parallel ProcessingLarger task split into subtasks.
Processed simultaneously by all available processors. - 46Amdahls LawB + (1-B)/n
(1-P) + P/n - 47SimplexTransmission is permitted in one direction only.
SPEAKERS - 48Half DuplexTransmission permitted in both directions, one at a time.
WALKIE TALKIE - 49DuplexTransmission permitted in both directions simultaneously.
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- Karteikarten am Component 2 Flashcards, erstellt von Lilli Flahh am 14/06/2018.
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