Description : It is the ratio of the power density radiated in a particular direction to the power density radiated to the same point by a reference antenna, assuming both antennas are radiating the same amount of power
Last Answer : directive gain
Description : The radiation pattern plotted in terms of electric field strength or power density
Last Answer : absolute radiation pattern
Description : In IPv4, what is the value of the total length field in bytes if the header is 28 bytes and the data field is 400 bytes?
Last Answer : 428
Description : The magnetic field of an antenna is perpendicular to the earth. The antenna’s polarization ___
Last Answer : is horizontal
Description : A mode where the entire magnetic field is in the transverse plane and has no portion parallel to the length axis.
Last Answer : TM mode
Description : When microwave energy is passed through a piece of ferrite in a magnetic field, another effect occurs. If the frequency of the microwave energy is much greater than the electron wobble frequency, the plane of polarization of the wavefront is rotated. This is known as
Last Answer : Faraday Rotation Effect
Description : The vertical field-scanning frequency is ______ Hz
Last Answer : 60
Description : In IPv6, when a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.
Last Answer : priority
Description : The point on the antenna where the transmission line is connected is called _____
Last Answer : feedpoint
Description : A virtual circuit which is logically equivalent to a two-point dedicated private-line circuit except slower
Last Answer : Permanent Virtual Circuit
Description : In a star-topology Ethernet LAN, _______ is just a point where the signals coming from different stations collide; it is the collision point.
Last Answer : a passive hub
Description : It is the resistance that, if it replaced the antenna, would dissipate exactly the same amount of power that the antenna radiates
Last Answer : . Radiation resistance
Description : It is the same with directive gain except that the total power fed to the antenna is used and the antenna efficiency is taken into account.
Last Answer : power gain
Description : It is analogous to power dissipation to copper cables, impurities in the fiber absorb the light and covert it to heaT
Last Answer : absorption loss
Description : Optical power is sometimes called ____
Last Answer : Radiant flux
Description : The final power amplifier in an FM transmitter usually operates class ___
Last Answer : C
Description : The final power amplifier in an FM transmitter usually operates class ______.
Description : The minimum optical power a light detector can receive and still produce a usable electrical output signal.
Last Answer : light sensitivity
Description : As light is coupled in a multiport deflective device, the power is reduced by:
Last Answer : 0.5 dB
Description : It is the thermal noise power normalized to 1- Hz bandwidth:
Last Answer : noise power density
Description : If the carrier of a 100 percent modulated AM wave is suppressed, the percentage power saving will be
Last Answer : 50
Description : The property of interchangeability for the transmitting and receiving operations is known as ____
Last Answer : reciprocity
Description : The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space
Last Answer : radiation field
Description : It is the ratio of the radiated to the reflected energy:
Last Answer : Radiation efficiency
Description : The line bisecting the major lobe, or pointing from the center of the antenna in the direction of maximum radiation is called _____
Last Answer : line of shoot
Description : A special type of transmission line that consist of conducting metallic tube through which high frequency electromagnetic energy is propagated
Last Answer : waveguide
Description : If energy is applied at the geometrical center of antenna, the antenna is said to be ___
Last Answer : center-fed
Description : The radiation pattern of collinear and a broadside antenna is __
Last Answer : bidirectional
Description : Hertz antenna are predominantly used with frequencies above
Last Answer : 2MHz
Description : The discone antenna is
Last Answer : useful as a UHF receiving antenna
Description : ____ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer.
Last Answer : UDP
Description : ______ are special-interest groups that quickly test, evaluate, and standardize new technologies
Last Answer : Forums
Description : _______ refers to the structure or format of the data, meaning the order in which they are presented.
Last Answer : Semantics
Description : ________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.
Last Answer : syntax
Description : The effect of a large magnitude of the numerical aperture.
Last Answer : The amount of external light the fiber will accept is greater
Description : It is the figure of merit used to measure the magnitude of the acceptance angle.
Last Answer : numerical aperture
Description : It is a result of photons of light that are absorbed by the atoms of the glass core molecule
Last Answer : infrared absorption
Description : It is caused by valence electrons in the silica material from which the fiber are manufactured.
Last Answer : ultraviolet absorption
Description : The maximum angle in which external light rays may strike the air/glass interface and still propagate down the fiber.
Last Answer : Acceptance cone half-angle
Description : Laser light is very bright because it is:
Last Answer : coherent
Description : The process of moving from one energy level to another is called __
Last Answer : Absorption
Description : The process of decaying from one energy level to another energy level is called _______
Last Answer : Spontaneous emission
Description : Any energy above the ground state is called ________
Last Answer : excited state
Description : What phenomenon will result if the glass fiber is exposed to long periods of high humidity?
Last Answer : stress corrosion
Description : Developed an optical fiber with losses less that 2 dB/km
Last Answer : Kao and Bockham
Description : The term single mode and multimode are best described as:
Last Answer : the number of wavelengths each fiber can support
Description : Photodiodes operate properly with:
Last Answer : reverse bias
Description : Range of wavelengths of ultraviolet
Last Answer : 10 nm to 390 nm
Description : Range of wavelength of visible light.
Last Answer : 390 nm to 770 nm
Description : Range of infrared.
Last Answer : 770 nm to 10^6 nm