35451. The area of coverage of a satellite radio beam is known as
35452. Which of the following data transmission media has the largest terrestrial range without the use of repeaters or other devices?
35453. What is the minimum number of wires needed to send data over a serial communication link layer?
35454. The _____ layer is the layer closest to the transmission medium.
35455. What is the name of the device that connects two computers by means of a telephone line?
35456. What is the main difference between DDCMP and SDLG?
35457. On a class B network, how many subnets are available with a subnet mask of 248?
35458. Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.
35459. In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.
35460. Typewriter terminals can print computer-generated data at a rate of
35461. To avoid transmission errors, a check figure is calculated by the
35462. What is the first octet range for a class A IP address?
35463. Which of the following is not a standard synchronous communication protocol?
35464. The network layer, in reference to the OSI model, provide
35465. In a circuit containing a transistor,both of its junctions are forward biaseIt operates in ---------region.
35466. Which of the following communications lines is best suited to interactive processing applications?
35467. What is the first octet range for a class B IP address?
35468. Number of valance electrons in Germanium is:
35469. Which of the following items is not used in Local Area Networks (LANs)?
35470. The Switched Mode Power Supplies have higher energy efficiency compared to Linear Power Supplies because:
35471. RS-232-G
35472. A subdivision of main storage created by operational software is referred to as a:
35473. RS-449/442-A/423-A is
35474. Which of the following digits are known as the area code of the Network User Address (NUA)?
35475. End-to-end connectivity is provided from host-to-host in:
35476. A form of modulation In which the amplitude of a carrier wave is varied in accordance with some characteristic of the modulating signal, is known as
35477. CSMA (Carrier Sense Multiple Access) is
35478. Which of the following summation operation is performed on the bits to check an error-detecting code?
35479. The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.
35480. Networks that follow the 802.5 standard appear to be in a star topology but are actually operating in what type of topology?
35481. A communications device that combines transmissions from several 1/ O devices into one line is a:
35482. The main difference between synchronous and asynchronous transmission is
35483. ARP (Address Resolution Protocol) is
35484. Which of the following uses network address translation?
35485. The X.25 standard specifies a
35486. The most important part of a multiple DHCP configurations is to make sure you don't have which of the following in the different scopes? Select the best answer.
35487. When a group of computers is connected together in a small area without the help of telephone lines, it is called
35488. The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?
35489. A communication network which is used by large organizations over regional, national or global area is called
35490. Information systems with common hardware, software, and network standards that provide easy access for end users and their networked computer systems. Select the best fit for answer:
35491. Which of the following TCP/IP protocol is used for file transfer with minimal capability and minimal overhead?
35492. Terminals are required for
35493. Gain of an amplifier can be stabilized by
35494. Business meeting and conferences can be held by linking distantly located people through a computer network. Not only the participants exchange information but are able to see each other. What is it called?
35495. What frequency range is used for microwave communications, satellite and radar?
35496. If only 5 bites are used for addressing the memory of a computer system,the memory size is:
35497. If the ASCII character H is sent and the character I is received, what type of error is this?
35498. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?
35499. UDP is:
35500. The interactive transmission of data within a time sharing system may be best suited to