Fibre optic media - Study guides, Class notes & Summaries

What is a network? A network is a set of connected computers and other devices in order to share resources. This includes files, application software and hardware. What are the two types of network? LAN and WAN What is a LAN? Local Area Network - covers a small geographical area What is a WAN? Wide Area Network - covers a large geographical area What is network infrastructure? Network infrastructure is the hardware and software resources of an entire network that...

Each question carries 2 marks. Choose the correct or best alternative in the following: Q.1 Which of the following is not an scripting language ? (A) HTML (B) XML (C) Postscript (D) Javascript Ans: C Postscript Q.2 Which of the following is a platform free language (A) Fortran (B) Assembly (C) C (D) Java Ans: D Java Q.3 A digital signature is (A) scanned signature (B) signature in binary form (C) encrypting information (D) handwritten signature Ans: C encrypting ...

How many Australians have diabetes? 1.7 million What % of diabetes is type 2? 90% 90% What is type 1 diabetes? Immune mediated destruction of B cells What is type 2 diabetes? B cell dysfunction and insulin resistance B cell dysfunction and insulin resistance Who is at risk of type 2 diabetes? >40, waistline >80cmF/>94cmM, south Asian or African descent, polycystic ovaries, gestational diabetes, mental illness medication How is type 2 diabetes diag...

What is a stand-alone computer? a computer that is not connected to a network What is a network? two or more electronic devices that are connected together. They can be wired or wireless Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen What are some advantages of using networks? • Communication between users • Sharing of files • Sharing of peripheral devices • Monitoring user activity • A...

CPU Central Processing Unit: The main part of the computer, consisting of the registers, ALU and control unit. Von Neumann Architecture Traditional computer architecture that forms the basis of most digital computer systems. Instructions are fetched, decoded and executed one at a time. Brainpower Read More MAR Memory Address Register: Holds the address of data ready for use by the memory data register. or the address of an instruction passed from the program counter. Step 2 ...

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check? CRC in the trailer What is the purpose of the OSI physical layer? transmitting bits across the local media Why are two strands of fiber used for a single fiber optic connection? They allow for full-duplex connectivity. Which characteristic describes crosstalk? the distortion of the transmitted messages from signals carried in adjacent wires Which procedure ...

Digital Convergence is the gradual merger of computing and communications into a new information environment, in which the same information is exchanged among many kinds of equipment, using the language of computers. Digital Signals that computer uses to process a series of datas 0s and 1s, off and on. Analog signals that use wave variations, continuously changing. Can an analog data be converted to digital data? yes, by using modems Modem short for modulate/ d...

COMPUTER SCIENCE EXAM WITH QUESTIONS & VERIED ANSWERS LATEST UPDATE ALREADY GRADED A+ disadvantages of networking computers - management is complicated and expensive - viruses can infiltrate one computer and spread across network quickly topology SDD Solid State Drive - non volatile storage - no moving parts - read/write quicker than HDD - low power consumption ASCII American Standard Code for Information Interchange - substitutes a number for each character - stored in binary usi...

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check? CRC in the trailer What is the purpose of the OSI physical layer? transmitting bits across the local media Why are two strands of fiber used for a single fiber optic connection? They allow for full-duplex connectivity. Which characteristic describes crosstalk? the distortion of the transmitted messages from signals carried in adjacent wires Which procedure ...

All computers connected to a network that participates directly in network communication are classified as. Hosts known as end devices. What is a server? Servers are computers with s software that enable them to provide services to devices on the network. File Server Stores corporate and user files in a central location. Client devices access this media. Peer to Peer Networking When one computer carries out the role of both client and server. End Device End de...