The data-link layer, in reference to the OSI model, specifies None of these data link procedures that provide for the exchange of data via frames that can be sent and received the interface between the X.25 network and packet mode device the virtual circuit interface to packet-switched service All of these TRUE ANSWER : ? YOUR ANSWER : ?
Most data communications involving telegraph lines use: wideband channels simplex lines narrowband channels dialed service None of these TRUE ANSWER : ? YOUR ANSWER : ?
Demodulation is a process of converting analog to digital signals converting digital to analog signals performing data description. multiplexing various signals into one high speed line signals TRUE ANSWER : ? YOUR ANSWER : ?
The X.25 standard specifies a data bit rate technique for start-stop data technique for dial access None of these DTE/DCE interface TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following digits are known as the sub-address digits (for use by the user) of the Network User Address (NUA)? 08-Dec 13-14 01-Apr 05-Jul None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following characteristic(s) is/are suited to the PSS applications? widely dispersed terminals and access to international packets switched services None of these bursty traffic and low communications intensity All of these Multiple remote host or applications accessed by a single local access circuit terminal and circuit TRUE ANSWER : ? YOUR ANSWER : ?
If you want to have more than one Telnet session open at the same time, what keystroke combination would you use? Ctrl+Shift+6, then X Tab+Spacebar Ctrl+Shift+X, then 6 Ctrl+X, then 6 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following commands sets the secret password to Cisco? enable password Cisco enable secret password Cisco enable secret Cisco enable secret cisco TRUE ANSWER : ? YOUR ANSWER : ?
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband. Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed Baseband refers to local area networks, and broadband refers to wide area networks. Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions TRUE ANSWER : ? YOUR ANSWER : ?
What is the name of the software package that allows people to send electronic mail along a network of computers and workstations? Electronic mail package None of these Memory resident package Data communication package Project management package TRUE ANSWER : ? YOUR ANSWER : ?