Comptia Security Plus Mock Test Q9

Which of the following devices would be MOST useful to ensure availability when there are a large number of requests to a certain website?

A. Protocol analyzer
B. Load balancer
C. VPN concentrator
D. Web security gateway

Correct Answer: B
Section: Network Security

Explanation:
Load balancing refers to shifting a load from one device to another. A load balancer can be implemented as a software or hardware solution, and it is usually associated with a device — a router, a firewall, NAT appliance, and so on. In its most common implementation, a load balancer splits the traffic intended for a website into individual requests that are then rotated to redundant servers as they become available.

Incorrect Answers:
A: The terms protocol analyzing and packet sniffing are interchangeable. They refer to the process of monitoring the data that is transmitted across a network.

C: A VPN concentrator is a hardware device used to create remote access VPNs. The concentrator creates encrypted tunnel sessions between hosts, and many use two-factor
authentication for additional security.

D: One of the newest buzzwords is web security gateway, which can be thought of as a proxy server (performing proxy and caching functions) with web protection software built in.
Depending on the vendor, the “web protection” can range from a standard virus scanner on incoming packets to monitoring outgoing user traffic for red flags as well.

References:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, pp. 103, 104, 118