medium
Single Answer
0Which of the following drawbacks is a concern when multilayer protocols are allowed?
Answer Options
A
A range of protocols may be used at higher layers.
B
Covert channels are allowed.
C
Filters cannot be bypassed.
D
Encryption can't be incorporated at multiple layers.
Correct Answer: B
Explanation
Multilayer protocols create three primary concerns for security practitioners: they can conceal covert channels (and thus covert channels are allowed), filters can be bypassed by traffic concealed in layered protocols, and the logical boundaries put in place by network segments can be bypassed under some circumstances. Multilayer protocols allow encryption at various layers and support a range of protocols at higher layers.