Term
| One disadvantage to microwave wavelengths is that the frequencies are suceptable to...? |
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Definition
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Term
| The term defined as the bending of radio waves or light waves as they travel at an angle from one medium to a second medium with a different density is...? |
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Definition
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Term
| What is NOT a factor in determining the refractive light index of air? |
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Definition
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Term
| The determining factor in calculating the correct size of a waveguide is...? |
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Definition
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Term
| Which sattellite communication system is used for monitoring space operations? |
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Definition
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Term
| High frequency transmissions follow what path from the antenna to the distant end? |
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Definition
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Term
| Which is NOT a disadvantage of laser light transmission? |
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Definition
| No need for careful alignment of transmitter and reciever |
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Term
| Which landline transmission medium is the primary carrier of voice communicatoins? |
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Definition
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Term
| What are the two most popular types of coaxial cable used in network topologies? |
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Definition
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Term
| What LAN communication technique does coaxial cable support? |
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Definition
| Broadband like a highway. |
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Term
| An optical communications system is comprised of a...? |
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Definition
| Transmitter, cable and reciever |
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Term
| Why are fiber optic cables immune to EMI? |
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Definition
| Fibers are made of dielectric material |
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Term
| Materials made of air, glass, and water are...? |
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Definition
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Term
| The direction change of a light beam caused by going to one transparent material to another is called? |
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Definition
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Term
| As the index of refraction icreases the speed of the light through the material...? |
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Definition
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Term
| Which satement best describes a fiberoptic cable critical angle? |
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Definition
| The smallest angel of incidence between two media where TOTAL INTERNAL RELECTION takes place. |
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Term
| What term refers to a fiber optic cable's core with the same refractive index thoughout the cable? |
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Definition
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Term
| Which type of fiber is most effective at reducing wave dispersion? |
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Definition
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Term
| What are the two principle weighting characteristics is use with telecommunication circuit noise? |
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Definition
| CCITT psophometric weighting and C-message weighting. |
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Term
| Which multiplexing method is used when digital signals are being transmitted? |
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Definition
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Term
| The two major types of frame structures are...? |
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Definition
| Consultative CCITT and low speed. |
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Term
| The method of multiplexing the T1 multiplexor uses is..? |
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Definition
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Term
| What term is associated with the delay or lag introduced in the appilication of voltage from one section to the next? |
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Definition
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Term
| What component of the microprocessor does all the computing? |
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Definition
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Term
| What type of microprocessor has a large instruction set that comtains complex instructions? |
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Definition
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Term
| What common integrated circuit is used to speed the operation of the processor? |
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Definition
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Term
| If you have a 33MHz CPU, what math coprocessor is not compatible? |
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Definition
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Term
| Main memory speed is measured in...? |
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Definition
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Term
| What type of ROM has the instructions to start the computer? |
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Definition
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Term
| Which of the following is not contained in the first Mb of memory? |
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Definition
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Term
| The distance between the head and the surface of the hard disk is known as the...? |
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Definition
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Term
| A 3.5 inch high density magnetic disk has a storage capacity of up to...? |
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Definition
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Term
| A highly dense storage medium that looks like the audio disks found in music stores is called a...? |
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Definition
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Term
| Why should you never open a computer's power supply? |
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Definition
| The voltage inside power supplies can kill you. |
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Term
| The PC power supply is rated in...? |
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Definition
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Term
| The device that provides the simplest protection against overvoltage reaching the computer is the...? |
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Definition
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Term
| Which one of the following is NOT one of the main areas on the keyboard? |
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Definition
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Term
| The three keys on the keyboard that, when used with the function keys provide more function are the...? |
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Definition
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Term
| The printer contains a buffer storage to...? |
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Definition
| Allow the CPU to perform other operations during printing. |
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Term
| What type of printer uses special paper? |
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Definition
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Term
| How does a thermal printer form a character? |
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Definition
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Term
| A moniter's resolution is expressed in the number of pixels that make up the image-so, the sharper the image the...? |
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Definition
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Term
| How is an element of the plasma display darkened? |
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Definition
| The adressing circuit reduces the sustaining voltage. |
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Term
| Which feature of the UNIX allows many users to work on the same computer system at the same time by sharing the computer's resources? |
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Definition
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Term
| Which of the following uses in SHELL, is being invoked to create programs called shell scripts? |
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Definition
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Term
| Which of the following is not a UNIX shell? |
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Definition
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Term
| What improvement gave Windows 98 the ability to connect to 127 periphials? |
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Definition
| Universal Serial bus (USB) |
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Term
| Windows NT is designed to be a...? |
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Definition
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Term
| How Much Memory Space (bytes) does each buffer take up? |
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Definition
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Term
| When the disk heads fly across the surface, in what order is data retrieved? |
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Definition
| The order in which it appears on the disk. |
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Term
| Name the access right that enables the user to act as a mini supervisor to grant rights to other users? |
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Definition
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Term
| What is the prime purpose of an operating system. |
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Definition
| Improve system performance and ease of use. |
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Term
| Thre three maine types of of user interfaces are command-driven, menu-driven, and ...? |
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Definition
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Term
| In what manner does a DBMS store data? |
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Definition
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Term
| The main difference between the flat-file and relational databases is...? |
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Definition
| Relational databases make a list of matches in one field before searching another field. |
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Term
| The advantage to using firmware is...? |
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Definition
| Faster operation and less suceptability to unathorized modifications. |
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