Flashcards
computing
Cards in this deck (25)
- 1what does memory do?The memory holds the program instructions and the program data.
- 2what is cheaper secondary storage or primary storage?secondary storage.
- 3what is WAN?wide area network.
- 4what dose CPU stand for?Central Processing Unit.
- 5what is LAN?local area network.
- 6what is programing?the act or process of planning or writing a program.
- 7what is higher 1GB or 1TB?1TB.
- 8what does wireless connection mean?wireless connection is when you don't need a internet cable going from the internet box to the computer.
- 9what is malware?malware is installed on someone's device without their or consent.
- 10what is the difference between WAN and LAN networks?WAN networks is over a wide area network this means that it can spread over a wide area such as a town or city and LAN is a local area network is around a village or small town.
- 11Explain the role of the control unit in the CPU?The control unit CU is a component of a computer's central processing unit CPU that directs the operation of the processor.
- 12What is the cache and what is it used for?Disk caching works under the same principle as memory caching but instead of using high-speed a disk cache uses conventional main memory.
- 13What does ALU stand for and what does it do?arithmetic logic unit, the part of a computer that performs all arithmetic computations such as addition and multiplication.
- 14What is an embedded system?An embedded system is a special-purpose system in which the computer is completely encapsulated by the device it controls.
- 15Where might you see an embedded system?It usually refers to small electronic devices. Say e.g. the system which controls a washing machine.
- 16Define a computing device.A device is a machine designed for a purpose. In a general context a computer can be considered a device.
- 17Define hardware and software.A piece of software is a program or piece of data that is run by hardware or multiple items of hardware put together to complete a task or function.
- 18What is a control system? How does it work?A control system manages, commands, directs or regulates the behaviour of other devices or systems using control loops.
- 19What is the definition of a protocol?the official procedure or system of rules governing affairs of state or diplomatic occasions.
- 20What are the WIFI channels and how are they used?5 GHz WiFi channels & frequencies. As the 2.4 GHz band becomes more crowded, many users are opting to use the 5 GHz ISM band.
- 21What is a virtual network?In computing, network virtualization or network see spelling differences is the process of combining hardware and software network resources.
- 22Give one advantage of using wired connections over wireless.wire connections can be quicker and the internet will run quicker.
- 23What is a virtual network?Virtual networking is a technology that facilitates the control of one or more remotely located computers or servers over the Internet.
- 24Describe the key features of a mesh network?A mesh network is a local area network LAN wireless local area network WLAN or virtual LAN VLAN that employs one of two decentralized connection arrangements: full mesh topology or partial mesh topology.
- 25—
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- Flashcards on computing, created by George Jacobs on 20/11/2017.
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- George Jacobs
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