Pass SSCP Exam Guide

Although it may cause a denial of service to the victim's system, this type of attack is a Smurf attack. A SYN Flood attack uses up all of a system's resources by setting up a number of bogus communication sockets on the victim's system. A Ping of Death attack is done by sending IP packets that exceed the maximum legal length (65535 octets).

Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, chapter 11: Application and System Development (page 789).

TCP is a reliable connection-oriented transport for guaranteed delivery of data.

Protocols represent certain rules and regulations that are essential in order to have data communication between two entities. Internet Protocols work in sending and receiving data packets. This type of communication may be either connection-less or connection-oriented.

In a connection-oriented scenario, an acknowledgement is being received by the sender from the receiver in support of a perfect transfer. Transmission Control Protocol or TCP is such a protocol.

On the other hand, UDP or User Datagram Protocol is of the connection-less type where no feedback is being forwarded to the sender after delivery and the data transfer have taken place or not. Though, it's not a guaranteed method, but, once a connection is established, UDP works much faster than TCP as TCP has to rely on a feedback and accordingly, the entire 3-way handshaking takes place.

The following answers are incorrect:

UDP provides for Error Correction, TCP does not: UDP does not provide for error correction, while TCP does.

UDP is useful for longer messages, rather than TCP: UDP is useful for shorter messages due to its connectionless nature.

TCP does not guarantee delivery of data, while UDP does guarantee data delivery: The opposite is true.

References Used for this question:

http://www.cyberciti.biz/faq/key-differences-between-tcp-and-udp-protocols/

http://www.skullbox.net/tcpudp.php

James's TCP-IP FAQ - Understanding Port Numbers.

Frame relay uses a public switched network to provide Wide Area Network (WAN) connectivity.

Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 73.