GENERAL CERTIFICATE OF SECONDARY EDUCATION GATEWAY SCIENCE ADDITIONAL SCIENCE B Unit 1 Modules B3 C3 P3 FOUNDATION TIER THURSDAY 14 JUNE 2007 Calculators may be used. Additional materials: Pencil Ruler (cm/mm) F B623/01 *CUP/T30055* Afternoon Time: 1 hour INSTRUCTIONS TO CANDIDATES • • • • • • • Write your name‚ Centre Number and Candidate Number in the boxes above. Answer all the questions. Use blue or black ink. Pencil may be used for graphs and diagrams only. Read each question
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Explain the differences between data‚ voice‚ and video signals in 200 to 300 words. Include a description comparing the differences between a private branch exchange (PBX) and Voice over Internet protocol (VoIP). Solution: Data signal is a mode of physical data transmission usually in binary code in signals or pulses from one source point to one or more destination point. Data is transformed into electromagnetic signals prior to transmission across a network. Data and video signal are typically
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Differentiate and compare between the followings 1. Syntax and semantics of a protocol. 2. Performance and reliability of a network. 3. Spatially shared and time shared in multipoint line configuration. 4. Circuit switch and packet switch network. Solutions: Differentiate and compare between the followings A. Syntax and semantics of a protocol. PROTOCOL is define as‚ the set of rules governing communication. Protocols defines: * What is Communicated? * How‚ it is Communicated
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The character Blanche is quite a complex member of the play; you do not see a true representation of her until several scenes in. The two opening scenes show different sides to the character depending on whose company she is in. Having come from a good family with a “proper” upbringing‚ it can be said that she has led a somewhat sheltered life and therefore finds it hard to relate and sympathise other characters that did not experience the same quality of life. Her actions are impulsive‚ spontaneous
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Room101 Building 57‚ Shanghai 201000 December 12‚ 2012 Harvey Specter Marketing Manager Kentucky Fried Chicken 23F‚ Grand Gateway Tower1‚ 3 Hongqiao Road Shanghai 200030 Dear Mr. Specter: I am a member of a team City Harvest currently working on the charity ‘People in Need’. I am contracting you because we would like to invite you to attend this event. As one of the most influential and well-known chain fast food restaurants in China‚ KFC is capable of being more enthusiastic about
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Omega Perimeter Design Project Student: School: Course: Instructor: Term: Date: Richard.Railey Tarrant County College ITSY-2401 Firewalls Charles Deassure Spring 2013 May‚ 1‚ 2013 Overview Current Situation Main Security Concerns: As a rapidly growing business that primarily utilizes IT resources for intranet company communications between and among a single home office and three satellite offices; internal network access controls and remote employee user’s access controls seem to be of
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General Packet Radio Service Mario Baldi (Technical University of Torino) mario.baldi[at]polito.it staff.polito.it/mario.baldi © M. Baldi: see page 2 GPRS Politecnico di Torino Copyright Notice This set of transparencies‚ hereinafter referred to as slides‚ is protected by copyright laws and provisions of International Treaties. The title and copyright regarding the slides (including‚ but not limited to‚ each and every image‚ photography‚ animation‚ video‚ audio‚ music and text) are property
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During company research‚ it has become evident that the San Jose and Hangzhou network are strikingly similar; each houses approximately 35 - 40 users which connect to each plants two Cisco 5920 switches. “Cisco routers use the different communication protocols (Ethernet‚ TCP/IP‚ for instance) and have their own programming languages” (Cisco). The switches are not able to function to their fullest ability because of they are
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The Routing Information Protocol (RIP) is a distance-vector routing protocol‚ which employs the hop count as a routing metric. RIP prevents routing loops by implementing a limit on the number of hops allowed in a path from the source to a destination. The maximum number of hops allowed for RIP is 15. This hop limit‚ however‚ also limits the size of networks that RIP can support. A hop count of 16 is considered an infinite distance and used to deprecate inaccessible‚ inoperable‚ or otherwise undesirable
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Classful vs Classless Routing v1.10 – Aaron Balchunas 1 - Classful vs. Classless Routing Classful vs Classless routing protocols Classful routing protocols do not send subnet mask information with their routing updates. A router running a classful routing protocol will react in one of two ways when receiving a route: • If the router has a directly connected interface belonging to the same major network‚ it will apply the same subnet mask as that interface. • If the router does not have any
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