Book Image

CompTIA Security+: SY0-601 Certification Guide - Second Edition

By : Ian Neil
Book Image

CompTIA Security+: SY0-601 Certification Guide - Second Edition

By: Ian Neil

Overview of this book

The CompTIA Security+ certification validates the fundamental knowledge required to perform core security functions and pursue a career in IT security. Authored by Ian Neil, a world-class CompTIA certification trainer, this book is a best-in-class study guide that fully covers the CompTIA Security+ 601 exam objectives. Complete with chapter review questions, realistic mock exams, and worked solutions, this guide will help you master the core concepts to pass the exam the first time you take it. With the help of relevant examples, you'll learn fundamental security concepts from certificates and encryption to identity and access management (IAM). As you progress, you'll delve into the important domains of the exam, including cloud security, threats, attacks and vulnerabilities, technologies and tools, architecture and design, risk management, cryptography, and public key infrastructure (PKI). You can access extra practice materials, including flashcards, performance-based questions, practical labs, mock exams, key terms glossary, and exam tips on the author's website at securityplus.training. By the end of this Security+ book, you'll have gained the knowledge and understanding to take the CompTIA exam with confidence.
Table of Contents (24 chapters)
1
Objectives for the CompTIA Security+ 601 exam
Free Chapter
2
Section 1: Security Aims and Objectives
7
Section 2: Monitoring the Security Infrastructure
12
Section 3: Protecting the Security Environment
17
Section 4: Mock Tests
18
Chapter 13: Mock Exam 1
19
Mock Exam 1 Solutions
20
Chapter 14: Mock Exam 2
21
Mock Exam 2 Solutions

Implementing Cybersecurity Resilience

It is important that companies have redundancy or fault tolerance built in so that they are protected from cyber attacks.

Redundancy

Redundancy is the process of when one part of a system fails but we have the ability to keep the system running. It could also be referred to as fault tolerance. Let’s begin by looking at the different types of redundancy that companies could deploy. We will start with disks and then move on to geographical dispersal.

Disk

There is a need for the disk setup on servers to provide redundancy, sometimes known as fault tolerance. In simple terms, this means that if one or more disks fail, the data is still available. There are different Redundant Array of Independent Disks (RAID) levels, so let’s look at each of these in turn, starting with RAID 0:

  • RAID 0: RAID 0 uses a minimum of two disks with a maximum of 32 disks; see Figure 12.4:

Figure 12.4 – RAID...