Description : What type of source is generally used in high-data-rate digital applications?
Last Answer : Laser diode.
Description : What five characteristics do applications using plastic clad silica (PCS) and all-plastic fibers typically have?
Last Answer : High NA, low bandwidth, tight bend radius, short length, and low cost.
Description : Why would a laser diode be used in a low-data-rate digital application?
Last Answer : When extremely high transmitter output powers are required.
Description : An across-the-line starter is typically used for which of the following applications? A. Reduced-current starting of large motors B. Low torque starting of small motors C. Low resistance starting of DC motors D. Full-voltage starting of motors
Last Answer : Answer: D
Description : Point out the wrong statement. a) A MapReduce job usually splits the input data-set into independent chunks which are processed by the map tasks in a completely parallel manner b) The ... implement the Mapper and Reducer interfaces toprovide the map and reduce methods d) None of the mentioned
Last Answer : None of the mentioned
Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?
Last Answer : Bi-phase level encoding.
Description : Power for the electronic digital multimeter is normally supplied by what internal power source?
Last Answer : Rechargeable batteries.
Description : Why are LEDs preferred over laser diodes for low- and moderate-frequency analog applications?
Last Answer : LEDs require less complex circuitry than lasers.
Description : Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?
Last Answer : SLEDs and ELEDs.
Description : This is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet. A. Platform as a Service (PaaS) B. Infrastructure as a Service (IaaS) C. Software as a Service (SaaS).
Last Answer : Software as a Service (SaaS).
Description : Which resources are typically provided by an Infrastructure as a Service cloud computing delivery model? A. applications B. virtual machines C. virtual private networks D. middleware software stacks
Last Answer : middleware software stacks
Last Answer : virtual machines
Description : Point out the correct statement. a) Mapper maps input key/value pairs to a set of intermediate key/value pairs b) Applications typically implement the Mapper and Reducer interfaces to provide the map and ... methods c) Mapper and Reducer interfaces form the core of the job d) None of the mentioned
Description : ____________is the delivery of on-demand computing services, from applications to storage and processing power, typically over the internet and on a pay-as-you-go basis. a) Cloud computing b) Cloud Infrastructure c) Distributed system d) None of these
Last Answer : Cloud computing
Description : At what temperature is glass fused to steel in the making of glass-lined equipment? The borosilicate glass is typically fused to carbon steel at a temperature of about 800 0C. 87. What are some typical applications for glass-lined reactors?
Last Answer : Glass-lined equipment gives superior protection to all mineral acids at all concentration and temperatures. One exception is hydrofluoric acid. They are also used is high-purity processes where cleanliness ... to the walls of the vessels while glass-lined vessels have good anti-stick properties.
Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?
Last Answer : Receiver sensitivity.
Description : What method for encoding digital data enables you to store more data in less space by limiting the distance between pulses on a hard disk?
Last Answer : Run length-limited (RLL) encoding.
Description : Older, single-sided, single-density floppy disk drives would probably use what method for encoding digital data onto the floppy disk?
Last Answer : Frequency-modulation encoding.
Description : What are the three most popular methods for encoding digital data onto magnetic disks?
Last Answer : a. Frequency modulation (FM). b. Modified frequency modulation (MFM). c. Run length limited (RLL).
Description : Digital magnetic tape recorders used to store and retrieve digital data fall into what three categories?
Last Answer : a. Computer-compatible digital tape recorders. b. Telemetry digital tape recorders. c. Instrumentation digital tape recorders
Description : Which method of digital data encoding does NOT return the tape to neutral between pulses but, instead, saturates the tape positively or negatively as the incoming data changes between zero and one?
Last Answer : Non-return-to-zero (NRZ) encoding.
Description : Which digital data encoding method records a digital one as a positive pulse and a digital (zero) as a negative pulse and returns the tape to neutral between pulses?
Last Answer : Return-to-zero (RZ) encoding.
Description : Which digital data tape encoding method presets the magnetic tape to all zeros and then records digital ones onto the tape?
Last Answer : Return-to-bias (RB) encoding.
Description : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?
Description : What format of digital tape recording is normally used to record instrumentation or telemetry data?
Last Answer : Serial digital magnetic tape recording.
Description : What format of digital tape recording takes a serial input stream of data pulses, breaks them up, and records them on more than one data track?
Last Answer : Serial-parallel digital magnetic tape recording.
Description : What format of digital tape recording is normally used to store computer data?
Last Answer : Parallel digital magnetic tape recording.
Description : In digital magnetic tape recording, the series of recorded digital pulses can represent what three types of data?
Last Answer : a. Data used by digital computers. b. Pulsed squarewave signals. c. Digitized analog waveforms.
Description : What type of applications were most third generation computer systems designed to accomplish?
Last Answer : Both scientific and business data processing applications.
Description : By what two means can the data contained on a source document be converted into a machinereadable form for processing?
Last Answer : By either direct or indirect means.
Description : What do you call a short bit sequence sent typically 128 bits in digital signatures? A. Hash B. Public key C. Private key D. Password
Last Answer : A. Hash
Description : Ferrite devices are useful in microwave applications because they possess what properties?
Last Answer : Magnetic properties and high resistance
Description : In applications where electronic waveforms are displayed on a CRT screen, the input signal is normally applied to what CRT element?
Last Answer : The vertical-deflection plate.
Description : How is the applications software compatibility problem overcome
Last Answer : Some software comes in several versions so it can run under several different operating systems.
Description : Why is the availability of applications software for a particular operating system critical?
Last Answer : Because, to use applications software, it must be compatible with the operating system.
Description : List two reasons why fusion splicing is one of the most popular splicing techniques in commercial applications.
Last Answer : . The small size of the fusion splice and the development of automated fusion-splicing machines.
Description : What multimode graded-index fiber offers the best overall performance for most applications?
Last Answer : 62.5/125 mm multimode graded-index fiber.
Description : For what types of applications are APDs generally used?
Last Answer : For high-data-rate applications and for low- or moderate-data rate applications where receivers with extremely low sensitivities are required.
Description : How many systems dealing with accounting applications have been widely accepted?
Last Answer : Six.
Description : What does the liquid crystal display require for computer applications?
Last Answer : An external light source, called a backlight.
Description : Private networks can be a richer source of evidence than the Internet because: a. They retain data for longer periods of time. b. Owners of private networks are more cooperative with law enforcement. c. Private networks contain a higher concentration of digital evidence. d. All of the abov
Last Answer : c. Private networks contain a higher concentration of digital evidence.
Description : Private networks can be a richer source of evidence than the Internet because: a. They retain data for longer periods of time. b. Owners of private networks are more cooperative with law enforcement. c. Private networks contain a higher concentration of digital evidence. d. All of the above.
Description : Private networks can be a richer source of evidence than the Internet because: a. They retain data for longer periods of time. b. Owners of private networks are more cooperative with law enforcement. c. Private networks contain a higher concentration of digital Evidences d. None of the above.
Last Answer : c. Private networks contain a higher concentration of digital Evidences
Description : Private networks can be a richer source of evidence than the Internet because: A. They retain data for longer periods of time. B. Owners of private networks are more cooperative with law enforcement. C. Private networks contain a higher concentration of digital evidence. D. All the above.
Last Answer : C. Private networks contain a higher concentration of digital evidence.
Description : A sound wave that is reflected back toward the source is known as what type of sound?
Last Answer : Echo.
Description : The source and drain of an N-channel JFET are made of what type of material?
Last Answer : N-type material.
Description : Which type of optical source tends to operate at higher drive currents to produce light?
Last Answer : Laser.
Description : Which type of optical source usually lacks reflective facets and in some cases are designed to suppress reflections back into the active region?
Last Answer : LED.
Description : What type of antenna has all elements connected to the same energy source?
Last Answer : Driven Array.