What is the goal of a Denial of Service Attack?
Answer(s): B
In computer security, a denial-of-service attack (DoS attack) is an attempt to make a computer resource unavailable to its intended users. Typically the targets are high-profile web servers, and the attack attempts to make the hosted web pages unavailable on the Internet. It is a computer crime that violates the Internet proper use policy as indicated by the Internet Architecture Board (IAB).
Which of the following display filters will you enable in Ethereal to view the three-way handshake for a connection from host 192.168.0.1?
Answer(s): C
A simple compiler technique used by programmers is to add a terminator 'canary word' containing four letters NULL (0x00), CR (0x0d), LF (0x0a) and EOF (0xff) so that most string operations are terminated. If the canary word has been altered when the function returns, and the program responds by emitting an intruder alert into syslog, and then halts what does it indicate?
Terminator Canaries are based on the observation that most buffer overflows and stack smash attacks are based on certain string operations which end at terminators. The reaction to this observation is that the canaries are built of NULL terminators, CR, LF, and -1. The undesirable result is that the canary is known.
You just purchased the latest DELL computer, which comes pre-installed with Windows XP, McAfee antivirus software and a host of other applications. You want to connect Ethernet wire to your cable modem and start using the computer immediately.Windows is dangerously insecure when unpacked from the box, and there are a few things that you must do before you use it.
Answer(s): A,C,D,E,F
The guest account is a possible vulnerability to your system so you should not enable it unless needed. Otherwise you should perform all other actions mentioned in order to have a secure system.
How many bits encryption does SHA-1 use?
SHA-1 (as well as SHA-0) produces a 160-bit digest from a message with a maximum length of 264 - 1 bits, and is based on principles similar to those used by Professor Ronald L. Rivest of MIT in the design of the MD4 and MD5 message digest algorithms.
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