Free Practice Questions for GAQM CEH-001 Exam

ARP poisoning is the closest value to the right answer because ARP spoofing, also known as ARP flooding, ARP poisoning or ARP poison routing (APR), is a technique used to attack a local-area network (LAN). ARP spoofing may allow an attacker to interceptdata frames on a LAN, modify the traffic, or stop the traffic altogether. The attack can only be used on networks that make use of the Address Resolution Protocol (ARP) and not another method of address resolution.

Implementing KoreK's attacks as well as improved FMS, aircrack provides the fastest and most effective statistical attacks available.John the Ripper is a password cracker, Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system, and

The question is not telling you what state the port is being reported by the scanning utility, if the program used to conduct this is nmap, nmap will show you one of three states – “open”, “closed”, or “filtered” a port can be in an “open” state yet filtered, usually by a stateful packet inspection filter (ie. Netfilter for linux, ipfilter for bsd). C and D to make any sense for this question, their bogus, and B, “You cannot spoof + TCP”, well you can spoof + TCP, so we strike that out.

C users must avoid using dangerous functions that do not check bounds unless they've ensured that the bounds will never get exceeded. A buffer overflow occurs when you write a set of values (usually a string of characters) into a fixed length buffer and write at least one value outside that buffer's boundaries (usually past its end). A buffer overflow can occur when reading input from the user into a buffer, but it can also occur during other kinds of processing in a program.

Firewalking uses a traceroute-like IP packet analysis to determine whether or not a particular packet can pass from the attacker’s host to a destination host through a packet-filtering device. This technique can be used to map ‘open’ or ‘pass through’ ports on a gateway. More over, it can determine whether packets with various control information can pass through a given gateway.

As an attacker you don’t have to steal an account and password in order to take advantage of an authenticated connection.

This is a typical Type-1 Cross Site Scripting attack. This kind of cross-site scripting hole is also referred to as a non-persistent or reflected vulnerability, and is by far the most common type. These holes show up when data provided by a web client is used immediately by server-side scripts to generate a page of results for that user. If unvalidated user-supplied data is included in the resulting page without HTML encoding, this will allow client-side code to be injected into the dynamic page. A classic example of this is in site search engines: if one searches for a string which includes some HTML special characters, often the search string will be redisplayed on the result page to indicate what was searched for, or will at least include the search terms in the text box for easier editing. If all occurrences of the search terms are not HTML entity encoded, an XSS hole will result.

The main difference between the protocols is the layer at which they operate. SSL operates at the transport layer and mimics the "socket library, " while S-HTTP operates at the application layer. Encryption of the transport layer allows SSL to be application-independent, while S-HTTP is limited to the specific software implementing it. The protocols adopt different philosophies towards encryption as well, with SSL encrypting the entire communications channel and S-HTTP encrypting each message independently.

Since the summer of 2001, WEP cracking has been a trivial but time consuming process. A few tools, AirSnort perhaps the most famous, that implement the Fluhrer-Mantin-Shamir (FMS) attack were released to the security community -- who until then were aware of the problems with WEP but did not have practical penetration testing tools. Although simple to use, these tools require a very large number of packets to be gathered before being able to crack a WEP key. The AirSnort web site estimates the total number of packets at five to ten million, but the number actually required may be higher than you think.

This is a buffer overflow with it’s payload in hex format.