Peripheral Ports, Cabling and Connectors in Software

Generate QR in Software Peripheral Ports, Cabling and Connectors

16 D You are most likely to mention that the modem uses a coaxial cable because all the other statements are incorrect Cable modems use the same cable that your television does, and they plug into the same type of wall outlet and are bidrectional A, B, and C are all incorrect because these are not properties of a coaxial cable Coaxial cables have the same type of connector on both ends, either of which can be attached to the modem or wall outlet The connector is round and contains only one wire The connector is twisted into place, so there is no wrong orientation of the connector in the port Finally, the locking mechanism on a coaxial cable is an outer ring that is twisted into place, not a tab on one side (as in an RJ connector) 17 A Male connectors have pins; female connectors have sockets Pins usually stick out from the interior of the connector and are mated with the receiver or socket in the connector B, C, and D, which make reference to the connector s shape, location of attachment, and number of wires, are all incorrect Connector shapes, attachment locales, and number of wires are all unrelated to the characteristic of having either pins or holes 18 B The RJ connector can be identified by its rectangular shape, retaining tab, and flat copper connections RJ connectors are often used in network and analog modem connections

A, DB, is incorrect because this type of connector is trapezoidal and has no copper connectors or retaining tab C, BNC, and D, mini-DIN, are incorrect because they are both round 19 D Mice do not use BNC connectors BNC connectors are used by coaxial cables and are designed for network or modem connections A, DB, is incorrect because this type of connector is used by serial mice B, Mini-DIN, and C, PS/2, are incorrect because PS/2 mice use a mini-DIN connector, which is often referred to as a PS/2 connector 20 A Parallel communications are faster than serial communications This is because parallel communications support the transfer of multiple bits at a time, whereas serial communications are marked by the transfer of one bit at a time Most printers are parallel due to the large amounts of data that they are sent by the computer B, serial communications result in fewer errors than parallel communications, is incorrect because parallel and serial communications differ in their methods of data transfer, not in their reliability or error rates C, parallel communications are compatible with more computer types than serial communications, is incorrect because all computers use both serial and parallel communications D, serial communications devices are easier to configure than parallel communications devices, is also incorrect These communications types refer to data transfer methods, not different device types or configurations In fact, some devices, such as printers and scanners, are available in either parallel or serial versions

When you turned on the computer, the processor initiated the BIOS The BIOS retrieved settings about the computer s components from the CMOS, where they were stored when the power was turned off last The BIOS used these settings to perform a POST, which checked for the presence and function of critical system components The BIOS then searched the hard drive for an operating system and handed it control of the computer Throughout this entire operation, the BIOS was responsible for intercepting and translating communications between the processor and the other devices, and the processor used the video adapter s I/O address to send it data about what to display on the monitor When you opened the word processor, your mouse used serial communication to send an IRQ signal to gain the attention of the processor (IRQ 3 or 4 if it was a serial mouse; IRQ 12 if it was a PS/2 mouse) The processor used the I/O address of the display adapter to display the movement of the mouse across the screen and sent a message to the hard drive to retrieve the selected application