Description : A(n) _____ medium provides a physical conduit from one device to another. A) guided B) unguided C) either (a)or (b) D) none of the above
Last Answer : guided
Description : Bits can be sent over guided and unguided media as analog signal by ___________ a. digital modulation b. amplitude modulation c. frequency modulation d. phase modulation
Last Answer : a. digital modulation
Description : Transmission media are usually categorized as . a. Guided or Unguided b. Determinate or Indeterminate c. Fixed or Unfixed d. Encryption or Decryption
Last Answer : a. Guided or Unguided
Description : The types of Unguided transmission channel or media used for LAN are __. A. Twisted Pair Cables B. Coaxial Cables C. Radio Waves D. All the above
Last Answer : C. Radio Waves
Description : Which of the following statement is incorrect? A. The Addresses Resolution Protocol, ARP, allows a host to find the physicaladdress ofa target host on the samephysical network, given only the target IP address. ... -addresses of our choice to every machine. D. All of theabove E. None of the above
Last Answer : All of theabove
Description : Which of the following primarily uses guided media? A) cellular telephone system B) local telephone system C) satellite communications D) radio broadcasting
Last Answer : local telephone system
Description : Transmission media are usually categorized as_______. A) fixed or unfixed B) guided orunguided C) determinate or indeterminate D) metallicor nonmetallic
Last Answer : guided orunguided
Description : Which of this is not a guided media? a) Fiber optical cable b) Coaxial cable c) Wireless LAN d) Copper wire
Last Answer : c) Wireless LAN
Description : What is Unguided Media ?
Last Answer : Unguided Media is a wireless medium . This type of medium is the atmosphere , water, and many other layers above the atmosphere in space. This medium transmits electromagnetic signals without any physical medium.
Description : In IEEE 802.11, a BSS without an AP is called an _________. A) an ad hocarchitecture B) an infrastructurenetwork C) either (a) or (b) D) neither (a) nor (b)
Last Answer : an ad hocarchitecture
Description : Inthe _______method, after thestation finds the line idle it sends or refrainfrom sending based on the outcome ofa random number generator. If the line is busy, it tries again A) nonpersistent B) 1-persistent C) p-persistent D) none of the above
Last Answer : p-persistent
Description : The _______ address in theheader ofa packet in adatagram network normally remains thesame during the entire journeyof the packet. A) source B) destination C) local D) none of the above
Last Answer : destination
Description : ______ cables arecomposed ofa glass or plastic inner core surrounded by cladding, allencasedin an outside jacket. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Fiber-optic
Description : _____ isa digitalprocess that allows several connections to share thehighbandwidth ofa link. A) FDM B) TDM C) WDM D) None of the above
Last Answer : TDM
Description : The Nyquist theorem specifies the minimum samplingrate to be_______. A) equal to the lowest frequency of asignal B) equal to the highest frequency ofa signal C) twice thebandwidth of a signal D) twice thehighest frequencyof a signal
Last Answer : twice thehighest frequencyof a signal
Description : What is the bandwidth ofa signal that ranges from 1 MHz to4 MHz? A) 4 MHz B) 1 KHz C) 3 MHz D) none of the above
Last Answer : 3 MHz
Description : The ____layer is responsible for the movement ofa signal across aphysical line. A) section B) line C) path D) photonic
Last Answer : section
Description : In IPv6, the _______ field inthe baseheader restricts the lifetime ofa datagram. A) version B) next-header C) hoplimit D) neighbor-advertisemen
Last Answer : hoplimit
Description : A DVD is an example ofa(n) – (A) hard disk (B) opticaldisc (C) output device (D) solid-state storage device (E) None of these
Last Answer : opticaldisc
Description : The basic unit ofa worksheet into which you enter data in Excel is called a– (A) tab (B) cell (C) box (D) range (E) None of these
Last Answer : cell
Description : To instruct Wordto fit the width ofa column to the contents ofa table automatically, click the button and then point to AutoFit Contents. (A) Fit to Form (B) Format (C) Autosize (D) Contents (E) AutoFit
Last Answer : AutoFit
Description : In mesh topology, every device has a dedicated topology of a. Point to point linking b. Both a and b c. Multipoint linking d. None of given
Last Answer : a. Point to point linking
Description : Radio waves are _________. A) omnidirectional B) unidirectional C) bidirectional D) none of the above
Last Answer : omnidirectional
Description : Which of the following is nota guided medium? A) twisted-pair cable B) coaxial cable C) fiber-optic cable D) atmosphere
Last Answer : atmosphere
Description : Which of the following is not a guided medium? a. twisted-pair cable b. fiber-optic cable c. coaxial cable d. atmosphere
Last Answer : d. atmosphere
Description : The IEEE 802.11g, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : OFDM
Description : The IEEE 802.11b, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : DSSS
Description : The IEEE 802.11a, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Description : The original IEEE 802.11,uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : either (a)or (b)
Description : A(n)_________ signal is a composite analogsignal with an infinite bandwidth. A) digital B) analog C) either (a)or (b) D) neither (a) nor (b
Last Answer : digital
Description : A ring SONET network can be _________. A) unidirectional B) bidirectional. C) either (a) or (b) D) neither (a) nor (b)
Last Answer : bidirectional.
Description : _______ ispart of the media; its location in the Internet model is below thephysical layer. A) An activehub B) A passivehub C) either (a)or (b) D) neither (a) nor (b)
Last Answer : A passivehub
Description : The mode theory uses electromagnetic wave behavior to describe the propagation of the light along the fiber. What is a set of guided electromagnetic waves called?
Last Answer : Modes of the fiber.
Description : A virtual local areanetwork (VLAN) is configured by _________. A) software B) physical wiring C) hardware D) none of the abov
Last Answer : software
Description : The data link layer takes the packets from _________ and encapsulates them into frames for transmission. a) network layer b) physical layer c) transport layer d) application layer
Last Answer : a) network layer
Description : Which guided media provide secure transmission amongst all of them? -Technology
Last Answer : Optical fibre provides secure transmission as compared to twisted pair and co-axial cable. As, it is more immune to tapping than copper cables.
Description : When we connect computers in a network using cables then it is called guided media. -Technology
Last Answer : Three types of cables are used for connecting computers in a network are as follows:1. Twisted Pair Cable It consists of two insulated wires twisted around each other and uses copper as the conducting ... material, which are capable of carrying light signals from a source at one end to another end.
Description : Transmission media lie below the_______ layer. A) physical B) network C) transport D) application
Last Answer : physical
Description : The portion of physical layer that interfaces with the media access control sublayer is called ___________ a. physical signalling sublayer b. physical data sublayer c. physical address sublayer d. physical transport sublayer
Last Answer : a. physical signalling sublayer
Description : Transmission media lie below thelayer. a. transport b. application c. physical d. network
Last Answer : c. physical
Description : Mention the different physical media.
Last Answer : Twisted pair (the wire that phone connects to) Coaxial cable (the wire that TV connects to) Optical fiber (the medium most commonly used for high-bandwidth, long-distance links) Space (the stuff that radio waves, microwaves and infra red beams propagate through)
Description : ________ is actually a multiport repeater. It is normally usedto createconnections between stations in a physical star topology. A) An activehub B) A passivehub C) either (a)or (b) D) neither (a) nor (b)
Last Answer : An activehub
Description : The sender is a router thathas receiveda datagram destinedfor a host on thesame network. The logical address that mustbe mapped to a physical address is ______. A) thedestination IP address in the datagram ... IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : thedestination IP address in the datagram header
Description : If the sender is a host and wants tosend a packet toanotherhost on another network, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : the IP address of therouter found inthe routing table
Description : f the sender is a host and wants tosend a packet toanotherhost on the samenetwork, the logical address that must be mapped to a physical address is ______. A) thedestination IP address in the datagram ... the IP address of therouter found inthe routing table C) either a or b D) noneof the above
Last Answer : hedestination IP address in the datagram header
Description : Which of the following uses cables to connect two or more computers? (a) Transmission (b) Unguided -Technology
Last Answer : (c) In guided media, signals are guided through cables.
Description : What does Unguided by universal rules mean?
Last Answer : Feel Free to Answer
Description : Which of the following is form of semi conductor memory in which it is possible to change the contents of selected memory locations by applying suitable electrical signals? a. CAM b. ROM c. EPROM d. Abacus
Last Answer : EPROM
Description : __________ consists of a central conductor and a shield. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Coaxial