Internet Bandwidth Technologies and their Protocols - Quiz Explanation
The correct answers are indicated below, along with text that explains the correct answers.
1.
Which protocol provides the highest bandwidth?
Please select the best answer.
A.
ISDN
B.
B:
C.
Frame Relay
D.
X.25
The correct answer is D.
ATM is the highest speed packet switching technology, supporting speeds from 25-622Mbps. Answer A is incorrect because ISDN is limited to data transfer speeds of 128Kbps. Answer B is incorrect because frame relay transmits packets over a WAN at speeds from 56Kbps-45Mbps. Answer C is incorrect because X.25 is concentrated in low-speed applications.
2.
Which connection technology provides error detection?
Please select the best answer.
A.
ATM
B.
Frame relay
C.
X.25
D.
ISDN
The correct answer is C.
X.25 performs error checking at each node and is widely used in low-speed applications such as credit card verification. Answers A, C, and D are incorrect because each operates faster by avoiding error detection.
3.
Which protocol is the most commonly used dial-up protocol for connecting a computer to the Internet?
Please select the best answer.
A.
ATM
B.
X.25
C.
ATM
D.
PPP
The correct answer is D.
Answer D is correct because only PPP or point-to-point protocol is the de facto network protocol for connecting a computer to the Internet by modem. Answers A, B, and D are incorrect, as none of them are standard protocols for Internet connectivity.
