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Which of the following is the core of fiber optic cables made of?
Suggested Answer: B
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Fiber optic cables have an outer insulating jacket made of Teflon or PVC, Kevlar fiber, which helps to strengthen the cable and prevent breakage, plastic coatings, used to cushion the fiber center. The center (core) of the cable is made of glass or plastic fibers.
Source: ANDRESS, Mandy, Exam Cram CISSP, Coriolis, 2001, Chapter 3: Telecommunications and Network Security (page 31).
11 comments · newest first
LE
Lenna
11 months ago
Teflon? That sounds off...
EL
Elinore
12 months ago
Kevlar is used for strength, but not the core.
MA
Margarett
12 months ago
Wait, are you sure? I thought it was PVC.
GL
Glendora
12 months ago
Totally agree, glass is the way to go.
NA
Nancey
1 year ago
It's definitely glass fibers!
SA
Sanda
1 year ago
I’m pretty confident it’s glass fibers, but I guess PVC could be a trick option since it’s used in other cables.
ME
Merilyn
1 year ago
I feel like it could be Kevlar, but that seems more related to the protective layer than the core itself.
JO
Jolanda
1 year ago
I remember practicing a question like this, and I think glass fibers were definitely the answer.
RA
Raelene
1 year ago
I think the core of fiber optic cables is made of glass fibers, but I'm not entirely sure.
CO
Coleen
1 year ago
I'm leaning towards "Access groups" here. That sounds like it would be the component responsible for grouping users and assigning permissions at the group level.
BA
Bambi
1 year ago
Hmm, this seems straightforward. I'll need to carefully read the question and options to make sure I understand the requirements.