Description : Bluetooth is a _______ technology that connects devices (called gadgets) in a small area
Last Answer : Wireless LAN
Description : Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1) DSL modem 2) A multi-homed firewall 3) VLAN 4) A brouter that acts both as a bridge and a router
Last Answer : 2) A multi-homed firewall
Description : Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1 DSL modem 2 A multi-homed firewall 3 VLAN 4 A brouter that acts both as a bridge and a router
Last Answer : 2 A multi-homed firewall
Description : What is the access point (AP) in a wireless LAN? a) device that allows wireless devices to connect to a wired network b) wireless devices itself c) both device that allows wireless devices to connect to a wired network and wireless devices itself d) all the nodes in the network
Last Answer : a) device that allows wireless devices to connect to a wired network
Description : A _______regenerates a signal, connects segments of a LAN,and hasno filtering capability. A) repeater B) bridge C) router D) none of the above
Last Answer : repeater
Description : In IPv6, when a datagram needs tobediscarded ina congested network, the decision is basedon the _______ field in thebase header. A) hop limit B) priority C) nextheader D) noneof the above
Last Answer : priority
Description : Membership in a VLAN can be based on _________. A) port numbers B) MAC addresses C) IP addresses D) all of theabove
Last Answer : all of theabove
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 : Devices interconnected by the LAN should include A. Computers and terminals B. mass storage device, printers and plotters C. bridges and gateways D. All of theabove E. None of the above
Last Answer : All of theabove
Description : IEEE hasdefined the specifications fora wireless LAN, called _______, whichcovers the physical and data link layers. A) IEEE 802.3 B) IEEE 802.5 C) IEEE 802.11 D) IEEE 802.2
Last Answer : IEEE 802.11
Description : In astar-topology Ethernet LAN, _______ is just a point where the signals coming from different stations collide; it is thecollision point. A) An activehub B) A passivehub C) either (a)or (b) D) neither (a) nor (b)
Last Answer : A passivehub
Description : PIM-DM is used in a _______ multicast environment, suchas a LAN. A) dense B) sparse C) a or b D) none of the above
Last Answer : dense
Description : Suppose there are n stations in a slotted LAN. Each station attempts to transmit with a probability P in each time slot. The probability that only one station transmits in a given slot is _______. a. nP(1 – P)n – 1 b. nP c. P(1 – P)n – 1 d. n P (1 – P)n – 1
Last Answer : a. nP(1 – P)n – 1
Description : The Aloha protocol is an OSI _______ protocol for LAN networks with broadcast topology A. layer 1 B. layer 4 C. layer 2 D. layer 3
Last Answer : C. layer 2
Description : Which one of the following event is not possible in wireless LAN? a) collision detection b) acknowledgement of data frames c) multi-mode data transmission d) connection to wired networks
Last Answer : a) collision detection
Description : The local loop has _______ cablethat connects the subscriber telephonetothe nearest end office. A) twisted-pair B) coaxial C) fiber-optic D) none of the above
Last Answer : twisted-pair
Description : A Bluetooth network consists of _____primary device(s)and up to____ secondary devices. A) one; five B) five; three C) two; six D) one; seven
Last Answer : one; seven
Description : A bus that connects a computer to Peripheral devices is called _______ A. System Bus B. Memory Bus C. Front-Side Bus D. External Bus
Last Answer : D. External Bus
Description : Ina synchronous modem, the receive equilizer is known as a. adaptive equilizer b. impariment equilizer c. statistical equilizer d. compromise equilizer
Last Answer : adaptive equilizer
Description : Ina _____scheme,all the signal levels are onone sideof the time axis,either above or below. A) polar B) bipolar C) unipolar D) all of theabove
Last Answer : unipolar
Description : Which quantizationlevel results ina more faithful reproduction of the signal? A) 2 B) 8 C) 16 D) 32
Last Answer : 32
Description : _____ signals can have an infinite number of values ina range. A) Analog B) Digital C) (a) or (b) D) None of the above
Last Answer : Analog
Description : The information tobe communicated ina data communications system is the_______. A) Medium B) Protocol C) Message D) Transmission
Last Answer : Message
Description : A _______LAN allows several LANs to be connected. A) backbone B) wireless C) wired D) none of the above
Last Answer : backbone
Description : Which device connects LAN to Internet : a) HTML b) Bridge c) Router d) None of These
Last Answer : c) Router
Description : .Which device connects LAN to Internet : a) HTML b) Bridge c) Router d) None of These
Description : The sharing of a medium and its link by two or more devices is called _______. A) modulation B) encoding C) line discipline D) multiplexing
Last Answer : multiplexing
Description : Computer connected with LAN (a) work fast (b) online (c) can E_mail (d) can share information or peripheral devices -Technology
Last Answer : (d) Computer connected with LAN can share information or peripheral devices.
Description : In the _______ method, the primary device controls the link; thesecondary devices follow its instructions. A) reservation B) polling C) token passing D) none of the above
Last Answer : polling
Description : Data flow between two devices canoccur in a _______ way. A) simplex B) half-duplex C) full-duplex D) all of theabove
Description : In a _______ connection, more thantwo devices can share asingle link. A) point-to-point B) multipoint C) primary D) secondary
Last Answer : multipoint
Description : The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format. a. network b. presentation c. transport d. data link
Last Answer : b. presentation
Description : A 24 volt battery supplies three devices wired in parallel that each have a resistance of 9 ohms. What is the voltage drop across each device?
Last Answer : A simple circuit has three resistors connected in series. The resistors are 14 ohms 12 ohms and 9 ohms. What is the total resistance of the circuit?
Description : Which of the following statement is not true about LAN? (a) LAN is designed for a small geographical area -Technology
Last Answer : (d) LANs are not public network and hence data can be shared among the computers of the organisation owning that LAN cannot share data across the world.
Description : Bluetooth is an example of __________ a) personal area network b) local area network c) virtual private network d) wide area network
Last Answer : a) personal area network
Last Answer : * # * # 232339 # * # * OR * # * # 526 # * # * OR * # * # 528 # * # * - W-LAN test code. Use the menu button to start the test. * # * # 232338 # * # * - WiFi MAC address. * # * # 1472365 # * # * - GPS ... * # 0673 # * # * OR * # * # 0289 # * # * - Melody Test. * # * # 3264 # * # * - RAM version test.
Description : What type of network is commonly used in an international organization? A) WAN B) MAN C) LAN D) CAN
Last Answer : WAN
Description : What type of network is commonly used in a collegelab environment? A) WAN B) MAN C) LAN D) CAN
Last Answer : LAN
Description : _____ are used for cellular phone, satellite,and wireless LAN communications. A) Radio waves B) Microwaves C) Infrared waves D) none of the above
Last Answer : Microwaves
Description : ________ is a collection of many separate networks. A) A WAN B) An internet C) a LAN D) None of the above
Last Answer : An internet
Description : A ______is a datacommunicationsystem spanningstates, countries, or the whole world. A) MAN B) LAN C) WAN D) none of the above
Description : A _______is a data communicationsystem withina building, plant,or campus, orbetween nearby buildings. A) MAN B) LAN C) WAN D) none of the above
Description : Your company has a LAN in its downtown officeandhas now set upa LAN inthe manufacturing plant inthe suburbs. Toenable everyoneto sharedata and resources between the two LANs, what type of device(s) are neededto connect them? Choose the most correct answer. A. Modem B. Cable C. Hub D. Router
Last Answer : Router
Description : Which of the following is not a disadvantage of wireless LAN? A. Slower data transmission B. higher error rate C. interference of transmissions from different computers D. All of theabove
Description : was the first step in the evolution of Ethernet from a coaxial cable bus to hub managed, twisted pair network. a. Star LAN b. Ring LAN c. Mesh LAN d. All of the above
Last Answer : a. Star LAN
Description : Which of the following statements is TRUE about CSMA/CD a. IEEE 802.11 wireless LAN runs CSMA/CD protocol b. Ethernet is not based on CSMA/CD protocol c. CSMA/CD is not suitable for a high propagation delay network like satellite network d. There is no contention in a CSMA/CD network
Last Answer : CSMA/CD is not suitable for a high propagation delay
Description : Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s. b. 2 c. 2.5 d. 5
Last Answer : b. 2
Description : Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? a. ARQ (Automatic Repeat Request) b. ARP (Address Resolution Protocol) c. SLIP (Serial Line Internet Protocol) d. PLIP (Parallel Line Internet Protocol)
Last Answer : b. ARP (Address Resolution Protocol)
Description : Which of the following network is used to connect a number of computers to each other by cables in a single location? A. WAN B. LAN C. MAN D. both b and c
Last Answer : B. LAN
Description : Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? A. ARQ Automatic Repeat Request B. ARP Address Resolution Protocol C. SLIP Serial Line Internet Protocol D. PLIP Parallel Line Internet Protocol
Last Answer : B. ARP Address Resolution Protocol