312-50 ECCouncil Certified Ethical Hacker Exam Free Practice Exam Questions (2025 Updated)

Network layer firewalls, also called packet filters, operate at a relatively low level of the TCP/IP protocol stack, not allowing packets to pass through the firewall unless they match the established rule set. To prevent Web Application attacks an Application layer firewall would be required.

References: https://en.wikipedia.org/wiki/Firewall_(comp uting)#Network_layer_or_packet_filters

Blackberry users warned of hacking tool threat.

Users have been warned that the security of Blackberry wireless e-mail devices is at risk due to the availability this week of a new hacking tool. Secure Computing Corporation said businesses that have installed Blackberry servers behind their gateway security devices could be vulnerable to a hacking attack from a tool call BBProxy.

References: http://www.computerweekly.com/news/2240062112/Technology-news-in-brief

Today, management demands metrics to get a clearer view of security.

Metrics that measure participation, effectiveness, and window of exposure, however, offer information the organization can use to make plans and improve programs.

References: http://www.infoworld.com/article/297464 2/security/4-security-metrics-that-matter.html

Phase shift keying is the form of Bluetooth modulation used to enable the higher data rates achievable with Bluetooth 2 EDR (Enhanced Data Rate). Two forms of PSK are used: π/4 DQPSK, and 8DPSK.

References: http://www.radio-electronics.com/info/wireless/bluetooth/radio-interface-modulation.php

A macro virus is a virus that is written in a macro language: a programming language which is embedded inside a software application (e.g., word processors and spreadsheet applications). Some applications, such as Microsoft Office, allow macro programs to be embedded in documents such that the macros are run automatically when the document is opened, and this provides a distinct mechanism by which malicious computer instructions can spread.

References: https://en.wik ipedia.org/wiki/Macro_virus

Computer viruses infect a variety of different subsystems on their hosts. A computer virus is a malware that, when executed, replicates by reproducing itself or infecting other programs by modifying them. Infecting computer programs can include as well, data files, or the boot sector of the hard drive. When this replication succeeds, the affected areas are then said to be "infected".

References: https://en.wikipedia.org/wiki/Computer_virus

A full restore is required.

A boot sector virus is a computer virus that infects a storage device's master boot record (MBR). The virus moves the boot sector to another location on the hard drive.

References: https://www.techopedia.com/definition/26655/boot-sector-virus

Dual-homed or dual-homing can refer to either an Ethernet device that has more than one network interface, for redundancy purposes, or in firewall technology, dual-homed is one of the firewall architectures, such as an IDS/IPS system, for implementing preventive security.

References: https://en.wikipedia.org/wiki/Dual-homed