A firewall is a combination of hardware and software, used to provide security to a network. It is used to protect an internal network or intranet against unauthorized access from the Internet or other outside networks. It restricts inbound and outbound access and can analyze all traffic between an internal network and the Internet. Users can configure a firewall to pass or block packets from specific IP addresses and ports. Which of the following tools works as a firewall for the Linux 2.4 kernel?
Which of the following would allow you to automatically close connections or restart a server or service when a DoS attack is detected?
Andrew works as a Forensic Investigator for PassGuide Inc. The company has a Windows-based environment. The company's employees use Microsoft Outlook Express as their e-mail client program. E-mails of some employees have been deleted due to a virus attack on the network. Andrew is therefore assigned the task to recover the deleted mails. Which of the following tools can Andrew use to accomplish the task?
Each correct answer represents a complete solution. Choose two.
John, a malicious hacker, forces a router to stop forwarding packets by flooding it with many open connections simultaneously so that all hosts behind it are effectively disabled. Which of the following attacks is John performing?
You work as a Network Administrator for Rick International. The company has a TCP/IP-based network. A user named Kevin wants to set an SSH terminal at home to connect to the company's network. You have to configure your company's router for it. By default, which of the following standard ports does the SSH protocol use for connection?
Adam works as a professional Computer Hacking Forensic Investigator, a project has been assigned to him to investigate and examine files present on suspect's computer. Adam uses a tool with the help of which he can examine recovered deleted files, fragmented files, and other corrupted data. He can also examine the data, which was captured from the network, and access the physical RAM, and any processes running in virtual memory with the help of this tool. Which of the following tools is Adam using?
Which of the following is used for debugging the network setup itself by determining whether all necessary routing is occurring properly, allowing the user to further isolate the source of a problem?
Which of the following are the types of intrusion detection systems?
Each correct answer represents a complete solution. Choose all that apply.
TESTED 24 Aug 2025
