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PAPER 1

PAPER 1. This paper will consist of a variable number of compulsory questions of variable mark value. Candidates will answer on the question paper . This paper will be set according to the content of Section 1 of the syllabus. No calculators allowed. Availability.

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PAPER 1

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  1. PAPER 1 This paper will consist of a variable number of compulsory questions of variable mark value. Candidates will answer on the question paper. This paper will be set according to the content of Section 1 of the syllabus. No calculators allowed. Cambridge International AS and A Level Computing 9691

  2. Availability This syllabus is examined in the May/June examination October/November examination • The Cambridge International AS Level syllabus is available to private candidates. The Cambridge • International A Level syllabus is not available to private candidates Cambridge International AS and A Level Computing 9691

  3. Cambridge website www.cie.org.uk Cambridge International AS and A Level Computing 9691

  4. Subject Contents Cambridge International AS and A Level Computing 9691

  5. Section 1 Computer systems, communications and software 1. components of a computer system and modes of use 2. system software 3. data: its representation, structure and management 4. hardware 5. data transmission and networking. Cambridge International AS and A Level Computing 9691

  6. Section 1 also covers. This section also provides candidates with understanding of the following aspects of computer systems: * system life cycle * choosing appropriate application software * handling of data in information systems * designing the user interface * logic gates. Cambridge International AS and A Level Computing 9691

  7. Components of a computer system and modes of use Content 1.1.1 Types of hardware 1.1.2 Types of software Cambridge International AS and A Level Computing 9691

  8. Define the terms • Hardware • Software • Input device • Storage device • Output device Cambridge International AS and A Level Computing 9691

  9. Hardware Web definition Definition: Hardware, in the computer world, refers to the physical components that make up a computer system Hardware is best described as a device that is physically connected to your computer or something that can be physically touched Cambridge International AS and A Level Computing 9691

  10. Types of Computer Hardware Internal External Cambridge International AS and A Level Computing 9691

  11. Examples • Monitor • Keyboard • Mouse • Battery Backup (UPS) • Printer • Speakers Cambridge International AS and A Level Computing 9691

  12. some less common computer hardware • Sound Card • Network Interface Card (NIC) • Expansion Card (Firewire, USB, Thunderbolt, etc.) • Hard Drive Controller Card • Analog Modem • Scanner • Floppy Disk Drive • Joystick • Webcam • Microphone • Tape Drive • Zip Drive Cambridge International AS and A Level Computing 9691

  13. Network Hardware • Digital Modem (e.g. Cable Modem, DSL Modem, etc.) • Router • Network Switch • Access Point • Repeater • Bridge • Print Server • Firewall Cambridge International AS and A Level Computing 9691

  14. Auxiliary Hardware • Fan (CPU, GPU, Case, etc.) • Heat Sink • Data Cable • Power Cable • CMOS Battery • Daughterboard Cambridge International AS and A Level Computing 9691

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  20. Computer Ports Cambridge International AS and A Level Computing 9691

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  23. SATA Ports (Serial Advanced Technology Attachment) Cambridge International AS and A Level Computing 9691

  24. HDMI Ports (High-Definition Multimedia Interface) Cambridge International AS and A Level Computing 9691

  25. CPU Cambridge International AS and A Level Computing 9691

  26. HUB An Ethernet hub, active hub, network hub, repeater hub, multiport repeater or hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/output (I/O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming. A hub works at the physical layer (layer 1) of the OSI model. The device is a form of multiport repeater. Repeater hubs also participate in collision detection, forwarding a jam signal to all ports if it detects a collision. Cambridge International AS and A Level Computing 9691

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  28. What is Collision • A collision is the situation that occurs when two or more demands are made simultaneously on equipment that can handle only one at any given instant Carrier Sense Multiple Access / Collision Detection , a set of rules determining how network devices respond when two devices attempt to use a data channel simultaneously (called a collision) Cambridge International AS and A Level Computing 9691

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  30. Carrier sense multiple access with collision detection • Carrier sense multiple access with collision detection (CSMA/CD) is aMedia Access Control method • The CSMA/CD method is internationally standardized in IEEE 802.3 and ISO 8802.3 Cambridge International AS and A Level Computing 9691

  31. Network Switch • A network switch is a small hardware device that joins multiple computers together within one local area network (LAN). Technically, network switches operate at layer two (Data Link Layer) of the OSI model Cambridge International AS and A Level Computing 9691

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  33. Network Device (Router) • Routers are small physical devices that join multiple networks together. Technically, a router is a Layer 3gateway device, meaning that it connects two or more networks and that the router operates at the network layer of the OSI model Cambridge International AS and A Level Computing 9691

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