- Designing and Deploying Cisco Unified IM and Presence
- Feb 25, 2016
- This chapter describes the Cisco Unified Communications IM and Presence (IM&P) architecture and design.
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- Cisco Video Surveillance
- Jan 25, 2016
- This chapter from CCNA Collaboration CIVND 210-065 Official Cert Guide offers a high-level overview of the solution Cisco offers in IP surveillance. The first section reviews legacy closed-circuit TV (CCTV) video-surveillance architecture and how it has evolved into what is available today. The subsequent sections cover Cisco’s physical security offering, the components involved with their solution, and the architectural design of how all the different elements work together.
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- WAN Technologies: Important Points of Interest, Part 3 of 3
- Jan 13, 2016
- Concluding this three-part series on WAN technologies, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, Academic Edition, discusses how satellite, wireless data, and leased lines are used as part of a networking solution.
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- WAN Technologies: Important Points of Interest, Part 2 of 3
- Jan 6, 2016
- In Part 2 of a three-part series, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, Academic Edition, reviews popular low-end and mid-grade offerings for Internet access: dial-up, ISDN, DSL, and cable.
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- WAN Technologies: Important Points of Interest, Part 1 of 3
- Dec 29, 2015
- In the first article of a three-part series, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, Academic Edition, provides an overview of some of the wide area networking (WAN) technologies that network engineers need to know to get that first job in the industry, or to move up in their chosen field.
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- TACACS+ vs. RADIUS: Similarities and Differences
- Dec 8, 2015
- If you're responsible for the security of your organization's network, it's important to examine all the possibilities. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, examines these two long-time AAA favorites, discussing how they protect your network's vital resources.
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- Network Address Translation (NAT) Implementation Methods
- Dec 1, 2015
- Have you ever adjusted to a new area code or ZIP code? Everyone needs unique phone numbers and addresses, which is a struggle for the phone companies and the post office. The Internet has the same growing pains on a planetary scale, with everyone's Net-connected devices needing unique IP addresses. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains how Network Address Translation makes it possible for all of us and our gadgets to communicate.
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- Inner Workings of the Domain Name System (DNS)
- Nov 24, 2015
- When you type an address into a browser and hit Enter, you expect to arrive at the intended website. Without the Domain Name System (DNS), that wouldn't happen. Whether simple or very complex, networks worldwide rely on the DNS to connect client and target. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains how DNS connects one person or server with another, and why you need to know about this undervalued service.
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- CCDE Study Guide: Enterprise Campus Architecture Design
- Nov 23, 2015
- In this chapter from CCDE Study Guide, Marwan Al-shawi discusses issues related to enterprise campus architecture design, including hierarchical design models, modularity, access-distribution design model, layer 3 routing design considerations, EIGRP versus link state as a campus IGP, and enterprise campus network virtualization.
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- Five (or Six) Things That Will Make You a DHCP Wizard
- Nov 17, 2015
- You're probably using the Dynamic Host Configuration Protocol (DHCP) right now, as you read this article. Surprised? Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains what you need to know about the use of DHCP in modern communications.
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- Network Routing Protocols and Methods, Part 2
- Nov 10, 2015
- In the conclusion of this series, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains how to untangle the detailed network information provided by two popular network routing protocols.
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- CCNA Collaboration CICD 210-060 Official Cert Guide: Managing Endpoints and End Users in CUCM
- Nov 9, 2015
- This chapter from CCNA Collaboration CICD 210-060 Official Cert Guide reviews the configuration of endpoints and users in Cisco Unified Communications Manager (CUCM), including setting up basic network services, registering phones, configuration, and bulk administration.
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- Network Routing Protocols and Methods, Part 1
- Nov 3, 2015
- In this two-part series, Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses current network routing protocols and methods for implementing them. This article covers the types of static versus dynamic routing protocols and the differences between them.
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- Common Protocols for Virtual Private Networks (VPNs)
- Oct 22, 2015
- Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses some of the protocols used on modern virtual private networks.
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- Routers and Switches and Hubs, Oh My! An Introduction to Network Devices and Their Functions
- 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.
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- Basic Layer 3 Routing Concepts
- 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.
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- Mitigation Technologies for E-mail-Based and Web-Based Threats
- 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.
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- VLAN Configuration Fundamentals and Commands
- Jun 15, 2015
- After becoming familiar with basic VLAN concepts, you need to learn how to configure your organization's networks and devices. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses important concepts and commands you will use in setting up networks and getting devices to talk to each other.
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- Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Campus Network Architecture
- Jun 4, 2015
- This chapter from Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: (CCNP SWITCH 300-115) covers implementing VLANs and trunks in campus switched architecture, understanding the concept of VTP and its limitation and configurations, and implementing and configuring EtherChannel.
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- Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Network Design Fundamentals
- Jun 1, 2015
- This chapter from Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: (CCNP SWITCH 300-115) begins the journey of exploring campus network design fundamentals by focusing on a few core concepts around network design and structure and a few details about the architecture of Cisco switches.
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