Related Questions

Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
A 1
B 2
C 3
D 4
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?
A Communications software
B Error detecting protocols
C Link access procedure (LAP)
D Telecommunications
E None of the above
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?
A Handshaking
B Modem options
C Protocol
D Duplexing
E None of the above
You are adding a new server to your network. The network uses TCP/IP. The new server will provide users with dial-up access to network resources. The data link communications protocol you choose for dial-up access must allow you to provide secure authentication. Which protocol should you choose?
A PPP
B DLC
C In the System option in Control Panel, select the setting that allows users to log on locally
D In the System option in Control Panel, set the user environment variables to allow Maria to log on locally
E None of the above
You have just installed a new internal PCI modem on you desktop. It will not dial out. what is the problem?
A The port speed is set too high
B the modem has not been set up in control panel properties
C the phone line is plugged into the line-in port on the modem card
D the phone line out of the wall is plugged into the phone port on the modem card
E None of the above
If points N and Y are just meeting at the point of contact between the dials and if dial spins at the same speed as dial 2, which of the following pairs of points will also meet in the course of the next full revolution of the dials?
A N and Z
B O and X
C O and X
D O and Z
If points P and X are just meeting at the point of contact between the dials , and if dial 2 spins at exactly double the speed of dial 1, which of the following pairs of contact ?
A N and Y
B N and Z
C O and X
D O and Z
If points P and Y are just meeting at the point of contact between the dials , and if dial 1 spins at exactly three time the speed of dial 2, which of the following pairs of points will be the next pair to meet at the point of contact?
A N and X
B N and Z
C O and Y
D P and Z
According to the passage, people respond to loud noises in the same way that they respond to
A annoyance
B damage
C danger
D disease
Data transfer rate of a Dial-up Modem is measured in -
A Mbps
B Kbps
C Tbps
D Gbps

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