Which feature of Category 5e STP cable reduces external interference?
A. Crosstalk
B. Shielding
C. Length
D. Twisting
Which feature of Category 5e STP cable reduces external interference?
Which feature of Category 5e STP cable reduces external interference?
A. Crosstalk
B. Shielding
C. Length
D. Twisting
Im laughing
After many conflicting answers, and many sources of research, I’ve decided both B and D could be the right answer.
The twisting helps reject EMI.
The shielding keeps out EMI.
However, most websites go with twisting being the answer. It’s a really dumb question. But twisting is what they’re looking for if you run into this question on the test from what I can gather.
Twisted pairs are used to reduce Crosstalk which is caused by the energy of two lines running in parallel affecting each other. This is not the result of an external source. The external interference caused by the noise generated by, for example large AC motors or generators is why shielding is used. The cable is a Cat5e STP (Shielded Twisted Pair). So the correct answer is B-shielding. Remember the shield is an outer covering added to cover the twisted pair and the shield is grounded at both ends of the cable providing protection against electromagnetic interference (EMI).
This question has 99 problems, and my answer isn’t one of them
downvote, im taking ur gold
upvote
I believe the people that are saying that B (shielding) are correct. The question does ask for external interference. The only internal interference is called cross talk and that is the reason for twisting the cables.
The correct answer is B. shielding because Steven said…
Quite difficult. Even there is a website shows C as an answer. I would go for Twisting.
Shielded cables (FTP or STP) are useful for environments where proximity to RF equipment may introduce electromagnetic interference, and can also be used where eavesdropping likelihood should be minimized
I think C would be corect if it would of asked about UTP cables but since it asked about STP, I would say B is correct because the shielding protects the cable even better.
Not sure why this was downvoted as this response is spot on. Twisting reduces crosstalk, yes, but it also reduces EMI and RFI, so twisted pairs reduces external interference in both UTP and STP cables, the STP cables just have the extra protection of the shielding. The way this question is worded, both twisting and shielding are correct. Change the STP to UTP and now only twisting is correct.
Nevermind, just noticed they said “C” would be correct. I think they actually meant to say “D” with the way their response is worded.
I think the answer here should be ‘Shielding’, because it deals on an external interference.
This is incorrect. the correct answer is B-shielding. Shielding reduces external interference while twisting reduces EMI (electro magnetic interference)