4.1 Explain the importance of basic network security concepts.
Objective 4.1 sits in Network Security, which carries 14% of the Network+ exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A review asks which record shows that a contractor reached the VPN, when, and for how long. Which part of AAA holds it?
The concept
Access control splits into proving who someone is, deciding what they may reach, and keeping a record of what happened. The three answer different questions, and only the last is written after the fact.
Why this answer
Once credentials are authenticated and the attempt is authorized, the RADIUS server logs the network access connection, and that log is the evidence a session took place and how long it ran.
- Correct. This is the log written once the connection is allowed.
- BAuthentication settles whether the credentials are genuine, a decision reached before any session exists.
- CAuthorization decides which resources a connection may reach, so it shapes access rather than describing it afterwards.
- DCertificates can carry the identity used during authentication, but issuing one records no session activity.
Now you: objective 4.1 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 2
An operator runs twelve VPN and wireless access servers, each holding its own account list. Which benefit does moving to RADIUS deliver?
Sample question 2 of 2
Requests for users in an untrusted forest must be settled by that forest's own directory. Which role should the local deployment take?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.