CompTIA Security+ Question J-30

Which of the following BEST allows Peter, a security administrator, to determine the type, source, and flags of the packet traversing a network for troubleshooting purposes?

A. Switches
B. Protocol analyzers
C. Routers
D. Web security gateways

Answer: B

Explanation:
A Protocol Analyzer is a hardware device or more commonly a software program used to capture network data communications sent between devices on a network. By capturing and analyzing the packets, Peter will be able to determine the type, source, and flags of the packets traversing a network for troubleshooting purposes. Well known software protocol analyzers include Message Analyzer (formerly Network Monitor) from Microsoft and Wireshark (formerly Ethereal).

CompTIA Security+ Question H-99

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

Answer: B

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.

CompTIA Security+ Question C-95

Emily, an employee, tethers her smartphone to her work PC to bypass the corporate web security gateway while connected to the LAN. While Emily is out at lunch her PC is compromised via the tethered connection and corporate data is stolen. Which of the following would BEST prevent this from occurring again?

A. Disable the wireless access and implement strict router ACLs.
B. Reduce restrictions on the corporate web security gateway.
C. Security policy and threat awareness training.
D. Perform user rights and permissions reviews.

Answer: C

Explanation:
BYOD (In this case Emily’s smart phone) involves the possibility of a personal device that is infected with malware introducing that malware to the network and security awareness training will address the issue of the company’s security policy with regard to BYOD.