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Routers and Switches and Hubs, Oh My! An Introduction to Network Devices and Their Functions
By Sean Wilkins
Oct 12, 2015
Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses some of the most common network devices that network engineers need to know and understand.
PHR Exam Prep: Workforce Planning and Employment
By Cathy Winterfield
Oct 7, 2015
Responsibilities relating to workforce planning and employment provide HR professionals with the opportunity to have a lasting impact on the organization. Whether this impact is positive, however, depends in large part on the way in which HR professionals execute these responsibilities. This chapter from PHR Exam Prep: Professional in Human Resources, 3rd Edition covers how an HR professional can successfully execute workforce planning and employment.
Basic Layer 3 Routing Concepts
By Sean Wilkins
Oct 6, 2015
How does a message get from point A to point B on a network? Though the question may seem simple, the process isn't. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses how basic packet routing works.
Video: CompTIA Network+ N10 006 Complete Video Course: QoS
By Kevin Wallace
Oct 1, 2015
In this excerpt from CompTIA Network+ N10-006 Complete Video Course, Kevin Wallace defines Quality of Service (QoS) and discusses different QoS mechanisms.
Mitigation Technologies for E-mail-Based and Web-Based Threats
By Omar Santos, John Stuppi
Sep 29, 2015
This chapter from CCNA Security 210-260 Official Cert Guide covers the Cisco E-mail Security Appliances (ESA) and the Cisco Web Security Appliance (WSA) technologies and solutions in detail. You will learn mitigation technologies such as spam and antimalware filtering, data loss prevention (DLP), blacklisting, e-mail encryption, and web application filtering.
Video: CompTIA Network+ N10 006 Complete Video Course: IP, ICMP, UDP, and TCP
By Kevin Wallace
Sep 28, 2015
In this excerpt from CompTIA Network+ N10-006 Complete Video Course, Kevin Wallace takes a look at some popular protocols, including IP, ICMP, UDP, and TCP.
Video: CompTIA Network+ N10 006 Complete Video Course: Analog Modems
By Kevin Wallace
Sep 24, 2015
In this excerpt from CompTIA Network+ N10-006 Complete Video Course, Kevin Wallace takes a trip back in time and discusses analog modems and the issue of sending digital information over an analog network.
Exam Profile: Red Hat Certified Engineer (RHCE) Exam (EX300)
By Sander van Vugt
Sep 21, 2015
Sander van Vugt offers exam details and preparation tips for the Red Hat Certified Engineer (RHCE) Exam (EX300).
Video: Using Cryptography to Maintain Communication Security
By Sari Greene
Sep 17, 2015
In this excerpt from CISSP Complete Video Course, Sari Greene discusses using cryptography to maintain information security, including a discussion of internet communication vulnerabilities.
Exam Profile: Red Hat Certified System Administrator (RHCSA) Exam (EX200)
By Sander van Vugt
Sep 16, 2015
Sander van Vugt offers exam details and preparation tips for the Red Hat Certified System Administrator (RHCSA) Exam (EX200).
Managing and Understanding the Boot Procedure on Red Hat Enterprise Linux
By Sander van Vugt
Sep 16, 2015
In this chapter from Red Hat RHCSA/RHCE 7 Cert Guide: Red Hat Enterprise Linux 7 (EX200 and EX300), Sander van Vugt explains how the boot procedure on Red Hat Enterprise Linux is organized, including a discussion of systemd, the overall service that takes care of starting everything on your server. He also covers GRUB2 and how to apply changes to the GRUB 2 boot loader.
Video: CISSP Complete Video Course: Securing Engineering Domain Review and Study Roadmap
By Sari Greene
Sep 14, 2015
In this excerpt from CISSP Complete Video Course, Sari Greene reviews Security Engineering Domain to prepare you for your CISSP exam.
Video: CISSP Complete Video Course: Cryptographic Protocols
By Sari Greene
Sep 10, 2015
This excerpt from CISSP Complete Video Course discusses cryptographic protocols, including IPsec, SSL, TLS, HTTPS, SSH, SFTP, and S/MIME.
Spanning Tree Protocol (STP) Walkthrough
By Sean Wilkins
Sep 3, 2015
A deep understanding of the Spanning Tree Protocol (STP) is crucial to working with Ethernet switched networks. What complicates understanding is that you need to know how networks use STP before you'll understand the protocol. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, walks through an example to show how port states and roles, bridge IDs and BPDUs, and more are related in Cisco network devices.
Video: NCLEX-PN Review: Simplifying Pharmacology
By Wilda Rinehart, Diann Sloan
Sep 3, 2015
In this excerpt from NCLEX-PN Review Complete Video Course, learn about the three main areas of the study of pharmacology: pharmacokinetics, pharmacodyanics, and pharmacotherapeutics; key abbreviations, and the seven rights of administering medication.
Video: CCNA Data Center DCICT 640-916: Understanding FCoE
By Frank Dagenhardt
Sep 1, 2015
Frank Dagenhardt, author of Cisco CCNA Data Center DCICT 640-916 LiveLessons: Introducing Cisco Data Center Technologies, discusses Fiber Channel over Ethernet, which allows you to map fiber channel frames over ethernet, so you can transport mission-critical data between servers and storage area networks.
Trunking Mechanics of Cisco Network Switches
By Sean Wilkins
Aug 27, 2015
Every network engineer must have a good understanding of how trunks work in an Ethernet switching environment. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, shows how trunks carry traffic from multiple VLANs across switches to their configured switchports, and discusses the Cisco modes and commands that configure trunking ports.
Understanding the Big Data World
By George Trujillo, Rommel Garcia, Steve Jones, Charles Kim, Justin Murray
Aug 20, 2015
The data volume, velocity, variety, and need to perform analytics on data from multiple different sources are disrupting business. The authors of Virtualizing Hadoop discuss how big data solutions such as Hadoop, in-memory, distributed search, and NoSQL are solutions for addressing the data disruption.
CompTIA Network+ N10-006 Quick Reference: WAN Technologies
By Anthony Sequeira
Aug 13, 2015
In this chapter from CompTIA Network+ N10-006 Quick Reference, Anthony Sequeira discusses various WAN technologies, such as fiber, satellite, broadband cable, and WiMAX.
Five Crucial Commands for Verifying Cisco Switch Network Status and Operational State
By Sean Wilkins
Aug 11, 2015
A network engineer needs to be conscious of the state of the network and every device connected to it. But when your network consists of multiple devices connected at a distance, how can you test connections and keep on top of network performance? Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses five basic commands you need to know and use correctly to maintain your Cisco network.

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