49951. The simultaneous transmission of data to a number of stations is known as
49952. Most data communications involving telegraph lines use:
49953. You have a network ID of 134.57.0.0 with 8 subnets. You need to allow the largest possible number of host IDs per subnet. Which subnet mask should you assign?
49954. Underground cables are less preferable in high voltage transmission because of:
49955. Which multiplexing technique shifts each signal to a different carrier frequency?
49956. Which of the following protocol is connection-oriented?
49957. The loss in signal power as light travels down the fiber is called
49958. Operating system functions may include
49959. Which layer of international standard organization's OSI model is responsible for creating and recognizing frame boundaries?
49960. Which of the following might be used by a company to satisfy its growing communications needs?
49961. Different computers are connected to a LAN by a cable and a/an
49962. The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer
49963. A characteristic of a multiprogramming system is:
49964. When a host knows its physical address but not its IP address, it can use _____.
49965. What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?
49966. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:
49967. After you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?
49968. Which utility is useful for troubleshooting NetBIOS name resolution problems?
49969. The EIA-232 interface has _____ pins.
49970. In OSI model, which of the following layer transforms information from machine format into that understandable by user
49971. The channel in the data communication model can be
49972. Which of the following is an important characteristic of LAN?
49973. Which of the following is a wrong example of network layer:
49974. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?
49975. Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:
49976. The metals normally used in a HRC fuse are:
49977. A modem is connected in between a telephone line and a
49978. What frequency range is used for TV transmission and low power microwave applications?
49979. The transient stability of a power system can be improved by:
49980. We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?
49981. ASK, PSK, FSK, and QAM are examples of _____ encoding.
49982. The data-link layer, in reference to the OSI model, specifies
49983. What function does a serial interface perform in data communication?
49984. You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use?
49985. Eight stations are competing for the use of the shared channel using the modified Adaptive free walk protocol by Gallager. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?
49986. When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
49987. Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as
49988. You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.
49989. Communication circuits that transmit data in both directions but not at the same time are operating in
49990. In a synchronous modem, the digital-to-analog converter transmits signal to the
49991. If the client receives an address from a DHCP server, what is the only information available in the Network Properties dialog box?
49992. An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is
49993. Which of the following TCP/IP protocol is used for transferring files from one machine to another?
49994. Which of the following is an example of bounded medium?
49995. Which transmission mode is used for data communication along telephone lines?
49996. Who invented the modem?
49997. With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?
49998. Which of the following communications modes support two-way traffic but in only one direction of a time?
49999. Which of the following TCP/IP internet protocol a diskless machine uses to obtain its IP address from a server?
50000. In OSI network architecture, the dialogue control and token management are responsibilities of
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