Book Image

CISSP in 21 Days

By : M. L. Srinivasan
Book Image

CISSP in 21 Days

By: M. L. Srinivasan

Overview of this book

<p>Certified Information Systems Security Professional (CISSP) is an internationally recognized security qualification. Success in this respected exam opens the door to your dream job as a security expert as well as an eye catching salary. But passing the final exam is challenging. Every year a lot of candidates do not prepare sufficiently for the examination, and fail at the final stage. This happens when they cover everything but do not revise properly and hence lack in confidence.<br /><br />This book will take you through the final weeks before the exam with a day-by-day plan covering all of the exam topics. It will help you to enter the exam room with confidence, knowing that you have done all you can to prepare for the big day.<br /><br />This small and concise CISSP exam quick-revision guide provides a disciplined approach to be adopted for reviewing and revising the core concepts a month before the exam. This book provides concise explanation of important concepts in all the 10 domains of the CISSP Common Body of Knowledge (CBK). Each domain is covered in two chapters that are represented as days. Each chapter contains some practice questions.&nbsp; A full-blown mock test is included for practice. This book is not a replacement to full study guides and tries to build on and reemphasize the concepts learned from such guides.</p>
Table of Contents (28 chapters)
CISSP in 21 Days
Credits
About the Author
About the Reviewer
Preface
22
Day 21: Mock Test Paper
23
References

Link layer


The methods, protocols, and specifications that are used to link hosts, or nodes, in a network are grouped as a link layer. A link layer operates close to physical layer components.

Link layer protocols

The following protocols operate on the link layer:

  • Address Resolution Protocol (ARP): It is used for resolving hardware address for a given IP address

  • Reverse Address Resolution Protocol (RARP): It is used to obtain IP addresses based on hardware address

  • Neighbor Discovery Protocol (NDP): It is used to find neighbor nodes in an IPv6 network

Address Resolution Protocol (ARP)

This protocol is a standard method for finding hardware addresses from network layer addresses such as the Internet Protocol (IP).

Protocol / Service

Address Resolution Protocol (ARP)

Layer(s)

The ARP works in the network layer of the OSI and the link layer of the TCP/IP model.

Applications

The primary application of the ARP is to translate IP addresses to Ethernet Media Access Control (MAC) addresses...