Exam Essentials

Understand what network scanners are and how to use each one. Network scanners are described as packet sniffers, IDS/IPS software, and port scanners. These devices can help you both troubleshoot and fix your network as well as find and stop hackers in their tracks.

Remember the basic purpose of a packet sniffer. The basic purpose of packet sniffers or network analyzers is to collect and analyze each individual packet that is captured on a specific network segment to determine if problems are happening.

Remember the main purpose of IDS/IPS software. The IDS detects unwanted attempts to manipulate network systems and/or environments, and the IPS is a computer security device that monitors network and/or system activities for malicious behavior and can react in real time to stop attacks.

Understand what an OTDR is used for. An optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to test fiber-optic cabling. You can learn the cable’s estimated...