Packet-switching infrastructures are safer environments because ___________.
A.
It is harder to sniff traffic since the computers have virtual private connections.
B.
They are just as unsafe as non-switched environments.
C.
The data link encryption does not permit wiretapping.
D.
Switches are more intelligent than bridges and implement security mechanisms.
Explanation:
Switched environments use switches to allow different network segments
and/or systems to communicate. When this communication takes place, a virtual
connection is set up between the communicating devices. Since it is a dedicated
connection, broadcast and collision data are not available to other systems, as in
an environment that uses only bridges and routers.
answer should be D. Switches implement VLANS and other security mechanisms. If you are in a single vlan and then you can still spoof. Its only the switches which can stop it from happening.
D is incorrect. D makes a comparison to bridges which do different job. While your comment make reference to VLANs which are a secuity mechanism, the primary feature of a switch (for the purpose of the CISSP test) is to create virtual circuits between ports having the conversation & preventing the traffic from being sniffed easily. A is the best answer of the options
A
A is correct