Description : ______ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T. A) X.25 B) Frame Relay C) ATM D) none of the above
Last Answer : ATM
Description : It is proposed network designed by major telephone companies in conjunction with the ITU-T with the intent of providing worldwide telecommunications support for voice, data, video and facsimile information within the same networ
Last Answer : ISDN
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 : Classification of protocol that interprets a frame of data as a group of successive bit combined into predetermined pattern of fixed length, usually 8 bits each.
Last Answer : Character and Byte-oriented protocols
Description : One of the responsibilities of the transport layer protocol is to create a ______ communication.
Last Answer : process to process
Description : ____ is a dynamic mapping protocol in which a physical address is found for a given logical address
Last Answer : ARP
Description : _________ is the protocol suite for the Internet.
Last Answer : TCP/IP
Description : It is a large scale integration chip designed for use in telecommunication industry for private branch exchanges, central office switches, digital handsets and digital echo suppressors.
Last Answer : Codec
Description : Ethernet is baseband transmission system designed by _____
Last Answer : Robert Metcalfe and David Boggs
Description : Type of PCM which is designed to take advantage of the sample-to-sample redundancies in the typical speech waveform
Last Answer : Differential PCM
Description : ____ is a virtual-circuit wide-area network that was designed in response to demands for a new type of WAN in the late 1980s and early 1990s.
Last Answer : . Frame Relay
Description : Which protocols adopted the standards of HDLC (High Level Link Control) protocol? a. X.25 protocol as LAPB (Link Access Procedure Balanced, V.42 protocol as LAPM (Link Access Procedure for ... Services Digital Network) protocol as LAPD (Link Access Procedure on D channel) d. All the above
Last Answer : d. All the above
Description : _______ refers to the structure or format of the data, meaning the order in which they are presented.
Last Answer : Semantics
Description : The process of decaying from one energy level to another energy level is called _______
Last Answer : Spontaneous emission
Description : _______ is a standard developed by ANSI for fiber-optic networks.
Last Answer : SONET
Description : A _______ is a three-layer device that handles packets based on their logical addresses
Last Answer : router
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 : A _______ is a connecting device that operates in the physical and data link layers of the Internet model.
Last Answer : bridge
Description : A repeater is a connecting device that operates in the _______ layer of the Internet model.
Last Answer : physical
Description : Bluetooth is a _______ technology that connects devices (called gadgets) in a small area
Last Answer : Wireless LAN
Description : IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.
Last Answer : . IEEE 802.11
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 : Congestion in a network or internetwork occurs because routers and switches have _______
Last Answer : queues
Description : TELNET is an abbreviation for _______
Last Answer : Terminal Network
Description : Message _______ means that the receiver is ensured that the message is coming from the intended sender, not an imposter
Last Answer : authentication
Description : And ITU-T specification code that deals with the telephone circuits. A. X series B. T series C. V series D. I series
Last Answer : C. V series
Description : Which of the following is the new name of CCITT? A. ITU-T B. ITU-R C. ITU-S D. ITU-D
Last Answer : A. ITU-T
Description : Which is not an ITU sector? A. ITU-W B. ITU-R C. ITU-T D. ITU-D
Last Answer : A. ITU-W
Description : ______ isa standard developed by ITU-T. A) SONET B) SDH C) either (a) or (b) D) neither (a) nor (b)
Last Answer : either (a) or (b)
Description : Which organization has authority over interstate andinternational commerce in the communications field? A) ITU-T B) IEEE C) FCC D) ISOC
Last Answer : FCC
Description : Who sets the standards of GSM? a) ITU b) AT & T c) ETSI d) USDC
Last Answer : c) ETSI
Description : The document standards for EDI were first developed by large business house during the 1970s and are now under the control of the following standard organisation: (A) ISO (B) ANSI (C) ITU-T (D) IEEE
Last Answer : (B) ANSI
Description : A ________ is a set of rules that governs data communication. A) forum B) protocol C) standard D) none of the above
Last Answer : protocol
Description : Regarding an AC generator connected to the main electrical bus; as the electric load and power factor vary, a corresponding change is reflected in the generator armature reaction. These changes in ... . governor speed droop setting B. voltage regulator C. balance coil D. phase-balance relay
Last Answer : Answer: B
Description : The magnetic field of an antenna is perpendicular to the earth. The antenna’s polarization ___
Last Answer : is horizontal
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 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 : 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 : Plots of field strength or power density with respect to the value at a reference point.
Last Answer : relative radiation pattern
Description : The radiation pattern plotted in terms of electric field strength or power density
Last Answer : absolute radiation pattern
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 point on the antenna where the transmission line is connected is called _____
Last Answer : feedpoint
Description : The discone antenna is
Last Answer : useful as a UHF receiving antenna
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