- The OSI Reference Model
- Apr 6, 2018
In this sample chapter from CompTIA Network+ N10-007 Cert Guide, explore the seven layers of the Open Systems Interconnection (OSI) reference model.
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- Exam Profile: CompTIA Network+ N10-007
- Mar 8, 2018
- CompTIA's Network+ certification is an entry-level certification for information technology (IT) professionals. In this exam profile, Anthony Sequeira provides exam details, highlights trouble spots, offers preparation hints, recommends study resources, and suggests next steps.
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- An Introduction to Ethical Hacking
- Mar 7, 2018
Ethical hacking is a form of legal hacking done with the permission of an organization to help increase its security. In this sample chapter from Certified Ethical Hacker (CEH) Version 9 Cert Guide, 2nd Edition, explore the fundamental principles of the security triad—confidentiality, integrity, and availability.
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- Network Perimeter Security
- Feb 21, 2018
In this sample chapter from CompTIA Security+ SY0-501 Cert Guide, Academic Edition, 2nd Edition, explore one of the most strategic pieces in your network security design—the firewall.
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- Network Components
- Feb 20, 2018
In this sample chapter from CompTIA Security+ SY0-501 Exam Cram, 5th Edition, learn how to support organizational security through the installation and configuration of network components—both hardware and software-based.
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- ALUA
- Oct 5, 2017
In this sample chapter from Storage Design and Implementation in vSphere 6: A Technology Deep Dive, 2nd Edition, learn how to identify various ALUA (Asymmetric Logical Unit Access) configurations and how different configurations affect the hosts.
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- Process Text Streams Using Filters
- Oct 5, 2017
This sample chapter from CompTIA Linux+/LPIC-1 Portable Command Guide provides information and commands on a variety of topics including cat, cut, expand, fmt, head, join, less, nl, od, paste, and more.
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- Logical Asset Security
- Mar 10, 2017
In this chapter from CISSP Exam Cram, 4th Edition, Michael Gregg explains the importance of basic security principles that help protect data while it is in transit, in storage, and at rest.
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- On the Motherboard
- Mar 10, 2017
In this chapter from Complete CompTIA A+ Guide to IT Hardware and Software, 7th Edition, Cheryl A. Schmidt explores the importance of motherboard components, their purpose, and properties.
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- Configure and Use BIOS/UEFI Tools
- Nov 19, 2016
In this sample chapter from CompTIA A+ 220-901 and 220-902 Cert Guide, 4th Edition, author Mark Edward Soper covers; Introduction to BIOS/UEFI, explaining the motherboard’s firmware, known as the BIOS or UEFI. BIOS/UEFI Configuration which demonstrates how to access the BIOS and modify settings; for example, RAM, processor, and video settings. Flash Upgrade BIOS/UEFI where you’ll learn how to upgrade the BIOS through a process known as flashing and Using BIOS/UEFI Diagnostics where you’ll learn about diagnostic features built into many BIOS/UEFI chips.
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- Identity and Access Management
- Nov 19, 2016
In this chapter from CISSP Practice Questions Exam Cram, 4th Edition , author Michael Gregg offers practice questions and answers for the CISSP Exam.
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- RAM Types and Features
- Nov 19, 2016
In this sample chapter from, CompTIA A+ 220-901 and 220-902 Cert Guide, Academic Edition, author Mark Edward Soper explains RAM types and features including Memory Upgrade Considerations, SO-DIMM vs DIMM, RAM Configurations, Single-Sided vs Double-Sided, RAM Compatibility, and Installing Memory.
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- VXLAN, NSX Controllers, and NSX Preparation
- Nov 18, 2016
Elver Sena Sosa introduces VXLAN, one of the control planes of NSX, NSX Controllers, and how to prepare the vSphere environment for NSX.
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- Exam Profile: CompTIA A+ 220-901 & 220-902
- Jun 15, 2016
- This article profiles the CompTIA A+ exams (220-901 & 220-902), which test competency in comprehensive vendor-neutral PC hardware and peripherals, mobile device hardware, networking and troubleshooting hardware and network connectivity issues, installing and configuring operating systems including Windows, iOS, Android, Apple OS X and Linux, security, cloud computing fundamentals, operational procedures and communication skills. It describes question forms, trouble spots, hints for exam preparation, and recommendations for additional study resources.
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- VM Storage Policies on VSAN
- Jun 15, 2016
VMware architects explain the concept of storage policy-based management.
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- Storage, Part 1
- May 30, 2016
- Learn how to set up and use NFS, iSCSI, FC, and FCoE protocols.
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- Exam Profile: Cisco 100-105 ICND1 v3.0
- May 27, 2016
- This article provides an exam profile for the Cisco 100-105 ICND1 v3.0 exam for the CCENT and CCNA certifications. It describes question forms, trouble spots, hints for exam preparation, and recommendations for additional study resources. Find out here what you can expect to see on the exam, and how you can better prepare for it.
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- Exam Profile: Cisco 200-105 ICND2 v3.0
- May 27, 2016
- This article provides an exam profile for the Cisco 200-105 ICND2 v3.0 exam for the CCNA certification. It describes question forms, trouble spots, hints for exam preparation, and recommendations for additional study resources.
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- Exam Profile: Cisco 200-125 CCNA v3.0
- May 27, 2016
- This article provides an exam profile for the Cisco 200-125 CCNA v3.0 exam for the CCNA certification. It describes question forms, trouble spots, hints for exam preparation, and recommendations for additional study resources.
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- Ranking Certifications (2016 Edition)
- Apr 25, 2016
- Employers look for and seek out certified IT professionals, but generally prefer candidates who possess both college degrees and specific certification credentials. Aspiring or active IT professionals can benefit from an informed evaluation of certifications in terms of the time commitment, cost, and other factors involved in earning such a credential vis-a-vis the ultimate financial or career advancement that such an investment can return. In this article, Ed Tittel and Mary Kyle look at one method for rating and ranking IT certifications.
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