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The 10 Most Important IT Skills for 2019

Article | Aug. 30, 2019

With skills gaps plaguing the industry, these 10 skills are must-haves for all IT departments. It’s no coincidence that these skills make up a large percentage of the IT skills gap across the industry. Decision-makers are struggling to fill these job roles. The positions also pay well because of a lack of qualified professionals. If you’re looking to make an IT skills investment or start a new career path this year, these are the areas to consider.

New and Emerging Certifications for 2019

Article | Aug. 10, 2019

Looking ahead at new and emerging certifications provides insight into the areas deemed valuable in the IT industry. If you are an early adopter or in a position where you need to show that you have the bleeding-edge expertise of a technology, this list of recent and upcoming certifications is for you. 

15 Top-Paying IT Certifications for 2019

Article | July 08, 2019

Based on survey responses from the Global Knowledge 2019 IT Skills and Salary Report, this year’s highest-paying certifications reveal a strong emphasis on particular topics, such as cloud computing, cybersecurity, networking and project management. In fact, cloud and project management dominate the top five spots.

PAN-OS - Network Security/Prevention Everywhere

Webinar – Recorded | May 23, 2019

Using Palo Alto Networks, PAN-OS, enterprises can build an IT Security Platform capable of delivering protection against all stages of the Cyber-Attack Lifecycle. From Reconnaissance to Act on Objective, the PAN-OS Single-Pass Parallel Processing (SP3) engine combines efficient throughput with maximum data protection. This recorded webinar will describe how the SP3 Architecture can increase network traffic visibility and enable you to control your environment.

The Basics of Computer Networking

Webinar – Recorded | May 17, 2019

Networks are as different as the people and organizations that use them. Despite those differences, there are some foundational components that all networks share. This session will explore different types of networks and the common components that must exist in these networks.

5 Most Popular IT Certifications for 2019

Article | May 13, 2019

While IT professionals are most likely to hold certifications in CompTIA and Microsoft, a greater percentage are pursuing credentials in AWS and Cisco in 2019. Here is a list of the five most sought-after IT certifications this year.

Cisco LAN Switching Fundamentals

Webinar – Recorded | May 09, 2019

This recorded webinar will help you understand the basics of switch functionality in Cisco networks. In this setting, a SWITCH is functioning at OSI Layer 2. Before SWITCHES we used BRIDGES to segment within the same network.

Everything You Need to Know About the CISSP Exam Changes

Article | March 20, 2019

The CISSP (Certified Information System Security Practitioner) certification exam update in 2018 included a modest revision of the topics and a significant change to the testing process. Preparing for the CISSP exam has become more challenging. Here's everything you need to know about the changes.

CISSP Certification is an Indicator of Cybersecurity Expertise

Article | March 14, 2019

(ISC)2’s CISSP (Certified Information System Security Practitioner) is a widely desired indicator of cybersecurity knowledge, experience and excellence on the resume of many IT professionals. Learn how to prep for the most comprehensive and in-demand cybersecurity certification.

Cisco Products that Strengthen Software-Defined Network Solutions

Article | Jan. 22, 2019

In support of software-defined networking, Cisco has introduced several products to strengthen networks and meet the increased demand for flexible and cost-efficient solutions. The Cisco SDN solution in the data center is ACI. Outside the data center the primary Cisco solution is DNA.

Accelerate Your Path to Cisco Routing and Switching Certification

Article | Jan. 17, 2019

The CCNAX - CCNA Routing and Switching Boot Camp is a great option to obtain Cisco Routing and Switching skills while pursuing the CCNA Routing and Switching certification. 

What is Software-Defined Networking?

Article | Jan. 15, 2019

Software-defined networking (SDN) is a solution that will enable your organization to meet the demands of network programmability and automation. The result will be greater network agility to support new applications while complying with increasing security needs.

ICND1 is the Starting Point for all Cisco Technologies and Careers

Article | Dec. 19, 2018

If you’re interested in pursuing a career in Cisco technologies or acquiring a Cisco career certification, all paths begin with ICND1 v3.0 - Interconnecting Cisco Networking Devices, Part 1.

Cisco’s Intent-Based Networking and the Journey to Software-Defined Networks

White Paper | Dec. 07, 2018

The traditional network engineering model of configuring one device at a time simply doesn’t scale to the growing needs of today’s network. Cisco's intent-based networks and software-defined networking solutions will enable your organization to meet the demands of network programmability and automation. The result will be greater network agility to support new applications while complying with increasing security needs.

Top Tech Trends and Predictions for 2019

Article | Dec. 03, 2018

Global Knowledge subject matter experts predict the top trends for 2019 in cloud, cybersecurity, networking and IT training.

Build an IT Career with CompTIA Certifications

White Paper | Nov. 26, 2018

CompTIA has become one of the most recognized and respected names in IT certifications, from the first A+ back in the 1990s to today with over a dozen vendor-neutral certifications covering a variety of topics. At first glance, it may seem daunting trying to figure out which certifications you should pursue and what it takes to pass the exams. But do not fear! CompTIA has streamlined their certification process. Let this white paper be your guide along your CompTIA journey. We will explain the certifications, the order to take them, how to prepare for the exams and the details of the testing experience. 

How to Build a Pluggable IoT Pipeline in AWS

White Paper | July 23, 2018

As far as modern architectures go, there are few more complicated than an IoT pipeline. You’ve got to consider an ingestion layer (typically streaming) that may undergo manic load. You’ve got to think of data tagging, storage (probably across multiple engines), archival and access—both internal and external. And all of it has to scale like crazy, be as cost effective as possible, and use automation wherever it can. Oh, and your boss needs the IoT pipeline built by tomorrow. Short timelines? Tight budget? Unrealistic expectations? Unfortunately, these asks are realities for many cloud professionals. AWS knows this and is here to help.  

Success in the Digital Age: The Value of Investing in People

Special Report | July 06, 2018

In the digital age, people and intellectual property have supplanted physical assets as the most important criteria for determining the value of an organization. It is the employees who develop the next big product or improve the practices, processes, services and internal culture that add significant value to an organization.

A New Look at Subnetting an IP Address

White Paper | Nov. 29, 2017

The process of subnetting is both a mathematical process and a network design process. Mathematics drives how subnets are calculated, identified, and assigned. The network design and requirements of the organization drive how many subnets are needed and how many hosts an individual subnet needs to support. Binary basics and IPv4 address structure were covered in part one of this two-part paper.

Understanding Google Cloud Platform: Architecture

White Paper | Nov. 20, 2017

Google Cloud Platform (GCP) is Google’s public cloud offering comparable to Amazon Web Services and Microsoft Azure. The difference is that GCP is built upon Google's massive, cutting-edge infrastructure that handles the traffic and workload of all Google users. There is a wide range of services available in GCP ranging from Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) to completely managed Software-as-a-Service (SaaS). We will discuss the available infrastructure components and how they provide a powerful and flexible foundation on which to build your applications.

What’s the Difference Between Hubs, Switches & Bridges?

Article | July 30, 2017

The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2 of the OSI model.

10 Ways the Cloud is Changing the World

Article | July 13, 2017

Let's look at 10 ways the cloud will change (and to a large degree already has changed) the world.

Building, Installing, and Configuring a RADIUS Server

White Paper | Feb. 24, 2016

The benefits of a RADIUS server are many. In addition to speed, you receive heightened security with user access monitoring, reporting and tracking functions and personalized restrictions. Setting it up costs less than $60 and this white paper walks you through each of the steps, settings, configurations and the equipment you will need.

What's New in the CompTIA Network+ (N10-006) Exam

White Paper | Sep. 25, 2015

CompTIA has raised the bar for Network+ candidates. The new certification exam has significant changes to the five "domains" or knowledge areas with new content related to security, cloud, data-center and operational concerns and troubleshooting. There is also a greater emphasis on wireless networking and VoIP. Use this white paper to help you gain an overview of what's new and what's different.

Building Up Network Security: An Introduction

Webinar – Recorded | July 16, 2015

Despite advances in security, hackers continue to break through network defenses. In this hour-long webinar, network security specialist Catherine Paquet will examine the favorite methods and targets of hackers and will introduce you to the different categories of security technologies. In this foundational presentation, you will learn about the benefits of security solutions such as firewalls, VPNs, IPS, identity services and BYOD.

VLANs and Trunks

White Paper | June 11, 2015

When properly utilized, VLANs and trunks provide flexibility, stability and ease of troubleshooting. This paper provides technical details about VLANs and trunks, along with design options at a basic to intermediate level. Recommendations and commands are included throughout.

Switching Operations

White Paper | June 05, 2015

Switches play a vital role in moving data from one device to another. Specifically, switches greatly improve network performance, compared to hubs, by providing dedicated bandwidth to each end device, supporting full-duplex connectivity, utilizing the MAC address table to make forwarding decisions, and utilizing ASICs and CAM tables to increase the rate at which frames can be processed.

Configuring Multicast with MPLS and GETVPN

White Paper | April 09, 2015

This paper covers the configuration of IP Multicast with Multiprotocol Label Switching (MPLS) including the basics of Multicast with the Group Encrypted Transport VPN (GETVPN).

IPv6: Are We There Yet?

White Paper | April 09, 2015

The first big push toward implementation of IPv6 was mobile devices. Now, one of the driving forces is the Internet of Things. As the name implies, this means everything, including machine to machine communication (M2M).

The Internet of Things: A Primer for the Curious

White Paper | April 08, 2015

Like it or not, Internet of Things (IoT) is upon us. There are a number of factors that will impact its adoption rate, and the inevitable privacy (or lack of) discussions will likely happen sooner than later. This is going to change the world as we know it, in many cases for the better. But we will need to keep an eye on the extent to which it invades our personal lives if it is going to be the positive force it has the potential to be.

Binary and IP Address Basics of Subnetting

White Paper | Aug. 07, 2014

The process of learning how to subnet IP addresses begins with understanding binary numbers and decimal conversions along with the basic structure of IPv4 addresses. This paper focuses on the mathematics of binary numbering and IP address structure.

Common Networking Standards and Why They Are Relevant

Webinar – Recorded | July 29, 2014

Often, we don't have time to learn the reasons behind the standards we use. But learning what instigated a standard goes a long way toward not only understanding its importance, but also more easily and effectively applying it in your workplace. In this hour-long webinar, Global Knowledge instructor Keith Sorn will discuss common networking standards and explain how they were determined and why they are relevant. He will fill you in on things like why it's important to use proper color-coding standards when making cable and why the length limitations on wired cable are essential. He will also explain new standards, such as power over fiber.

Is Network Functions Virtualization (NFV) Moving Closer to Reality?

White Paper | July 23, 2014

Network Functions Virtualization (NFV) is gaining momentum along with Software-Defined Networking (SDN). This paper examines the history of NFV and explores the prospects for networking to gradually evolve from a hardware-centric approach to a software-driven model. It concludes with an examination of future market implications and how NFV can help organizations to achieve their goals.

SDN and Cloud Computing

White Paper | June 18, 2014

After a review of Software-Defined Networking (SDN) and its close cousin Network Functions Virtualization (NFV), this white paper addresses three main deployment scenarios: SDN without deploying cloud computing, cloud computing without deploying SDN, and deploying cloud computing in conjunction with SDN. We'll look at use cases, when the approach makes sense, and any applicable limitations.

Which Exams to Take: CCNA Composite vs ICND1 and ICND2

Video | Feb. 25, 2014

Global Knowledge instructor Kevin Schweers reviews the basic differences between the two paths to achieving CCNA certification.

Optimizing DNS for Better Performance

Article | Jan. 23, 2014

Most Internet users don't realize that often a website or other service that seems slow to respond is actually working fine. Instead, it’s the resolution of DNS that is putting a glitch in your giddy up. Fortunately, there are several steps you can take to optimize your DNS to get better performance.

Subnetting Made Easy - Part 1

Video | Nov. 14, 2013

Instructor John Harmon explains subnetting using binary numbers and decimal conversions.

Subnetting Made Easy - Part 2

Video | Oct. 10, 2013

Instructor John Harmon continues his explanation of subnetting by showing how subnet masks can be used to sub-divide networks.

Wireless LAN Channels

Video | Oct. 10, 2013

There are several Wireless LAN Standards, including b, g, and n, which exist in the 2.4 GHz band. These standards need around 20 MHz of radio frequency in order to transmit their signals. In this video, Ben Miller discusses how to pick access points and channels for optimal performance.

When is a TCP SYN not a SYN?

Article | Oct. 07, 2013

Answer? When it is flagged as a retransmission in Wireshark!

How MIMO Cuts Data Transmission in Half

Video | Sep. 12, 2013

The driver behind 802.11n is MIMO, or multiple input multiple output. This video explains how MIMO works to double your channel speed by sending two or more data streams over the same channel.

Why Network Administrator is the Hot IT Job of the Future

Article | Aug. 23, 2013

Are you at a crossroads professionally or looking to start training for a new job? If so, you might want to consider pursuing network administration as a career. Network administrators are responsible for maintaining computer hardware and software systems that make up a computer network, including maintaining and monitoring active data networks, converged infrastructure networks, and related network equipment.

Understanding Networking Fundamentals

Video | Aug. 22, 2013

Global Knowledge Product Manager Tori Easterly discusses the benefits of our Understanding Networking Fundamentals course.

What Is Multiplexing?

Article | Aug. 22, 2013

Multiplexing is the technology that is able to combine multiple communication signals together in order for them to traverse an otherwise single signal communication medium simultaneously. Multiplexing can be applied to both analog and digital signals. A benefit of using multiplexing, or muxing, is reducing the physical hardware cost for expensive dedicated network communication segments, such as copper or fiber cables.

Multi-Step Authentication and Why You Should Use It

White Paper | Aug. 08, 2013

Authentication is one of the essential components of security. It is one part of the concept known as authentication, authorization, and accounting (AAA). Authentication is the process of claiming an identity the proving that you are that claimed identity. Authorization is the mechanism to control what you can access or do. Accounting is the recording of events into a log to review the activities against the rules and policies in order to detect violations or confirm compliance. All three of these should be addressed when constructing a system in order to have a reasonable foundation for reliable security.

SIP and the Art of Converged Communications

White Paper | June 18, 2013

Session Initiation Protocol (SIP) is an internet signaling protocol, developed by the IETF (starting in 1996), for establishing, maintaining, and tearing down sessions between a variety of real-time media, including voice, video, and chat. SIP allows endpoints to locate other endpoints, whether stationary or mobile. SIP doesn't have to worry about transporting voice or video as Real Time Transport Protocol (RTP) takes care of that. It also relies on Session Description Protocol (SDP) to negotiate capabilities and codecs. SIP does not provide a Directory Service or Authentication, but it does work with services such as LDAP or RADIUS. SIP is only concerned with signaling. This white paper is going to look at the way SIP is used in the converged Unified Communications environment.

Foundational Focus: Basic of Ethernet

White Paper | May 09, 2013

A local area network (LAN) provides a path of communication, allowing the delivery of packets of data, voice, or video originating from the sender (logical source address) to the receiver (logical destination address). Ethernet is the most common LAN used. As you start to learn about networking, remember that communication and the movement of large numbers, whether it is people, cars, mail, or network traffic, have a commonality. Everything you know and use in your daily life can be compared to the way traffic moves.

Beginner’s Guide: Seven Layers of the OSI Model

Article | April 30, 2013

The OSI model is a conceptual tool used to discuss and describe network functions. The use of a standard reference model is essential to communicating ideas as well as creating new technologies. It is a good idea to be familiar with the OSI model, the features assigned to each layer, and examples of common protocols or technologies associated with the OSI layers.

Foundational Focus: OSI Model – Breaking Down the 7 Layers

White Paper | April 12, 2013

The OSI model is a conceptual tool used to discuss and describe network functions. The use of a standard reference model is essential to communicate ideas as well as create new technologies. It is a good idea to be familiar with the OSI model, the features assigned to each layer, and examples of common protocols or technologies associated with the OSI layers.

Benefits of Global Knowledge's CCNA Boot Camp

Video | March 21, 2013

Diane Teare, Global Knowledge's Cisco Course Director, discusses the advantages to taking our CCNA Boot Camp.

Spanning Tree Overview

Video | March 13, 2013

Global Knowledge instructor Kevin Schweers reviews the fundamentals of spanning tree, including the three primary steps.

Using Tunneling to Transition to IPv6

Article | Jan. 15, 2013

One of the many useful features of tunneling is to carry non-IP traffic across an IP network, and this is still the case when dealing with IPv6 traffic. This transition mechanism makes use of a configured tunnel to transport IPv6 over a native IPv4 network, which may consist of two sites or more. Unlike the previous transition mechanisms, tunneling is not monolithic; while the basic principles may be similar, the operations are different. The following chart gives a breakdown of the current, major tunneling types in use, particularly in a Cisco environment:

IP Version 6 Transitions Mechanisms

White Paper | Dec. 05, 2012

As with the adoption of any new technology, the move from IP version 4 to IP version 6 will take a number of years to complete. During that transition phase, various mechanisms will be necessary to continue support of the older protocol as the newer gains widespread momentum. In addition, there has been some evolution even within the availability of these mechanisms, some of which have already passed from general use into deprecated status. Network engineering professionals already proficient in the use of IPv6, as well as the available coexistence mechanisms, will undoubtedly stay in high demand throughout this process.

Rapid Spanning Tree

Article | Nov. 29, 2012

The STP (Spanning Tree Protocol) standard (IEEE 802.1d) was designed when the recovery after an outage could wait a minute or so and be acceptable performance. With Layer 3 switching in LANs, switching began to compete with routers running protocols because they are able to offer faster alternate paths. Rapid Spanning Tree Protocol (RSTP or IEEE 802.1w) brought the ability to take the twenty seconds of waiting for the Max Age counter plus fifteen seconds of Listening plus fifteen seconds of Learning or fifty seconds down to less than one second for point-to-point connected and edge switches and six seconds for root switches.

Service Portfolio Real World Example – Cloud Services Provider

Article | Nov. 28, 2012

In a recent post, I gave an overall description of a service portfolio and the key components of a portfolio. Here, I will describe how a cloud services provider might implement an ITIL service portfolio. A cloud services provider will regularly have a set of services under development, a set of service in live operation, and a set of services that are retired.

Switches and Multiple VLANS

Article | Nov. 08, 2012

This short example illustrates basic VLAN operation. Examining VLANs in a large-scale installation can show the full benefits of VLANs. Consider that this is a small portion of a large corporate headquarters with 5,000 devices connected in a 20 building campus.

IP Version 6 Address Types

White Paper | Nov. 05, 2012

In 1998, the Internet Engineering Task Force (IETF) released RFC 2460, outlining the technical specifications of IPv6, which addressed the shortcomings of the aging IPv4 protocol. As with any evolution of technology, new elements exist in the protocol that may seem strange and unfamiliar. This certainly includes address representation, space, and so forth, but also includes a number of different types of addresses as well. A subset of these new addressing types has corresponding types in IPv4, but many will seem significantly different. The purpose of this white paper is to examine addressing classifications in detail and outline their functions within the context of the protocol.

Configuring VLANs on a Switch

Article | Nov. 01, 2012

Depending on the switch vendor, the exact steps will vary on how to set up and configure VLANs on a switch. For the network design shown, the general process for setting up VLANs on the switch is:

What Happens if I Have More Than One Switch With Redundant Links? Part 2

Article | Oct. 18, 2012

Now that the network is installed, each switch has a bridge ID number, and the root switch has been elected, the next step is for each switch to perform a calculation to determine the best link to the root switch. Each switch will do this by comparing the path cost for each link based on the speed. For paths that go through one or more other switches, the link costs are added. The switch compares this aggregate value to the other link costs to determine the best path to the root switch.

What Happens If I Have More Than One Switch With Redundant Links?

Article | Oct. 11, 2012

That depends on their configurations. For example: While it makes very good sense to include redundant physical links in a network, connecting switches in loops, without taking the appropriate measures, will cause havoc on a network. Without the correct measures, a switch floods broadcast frames out all of its ports, causing serious problems for the network devices. The main problem is a broadcast storm where broadcast frames are flooded through every switch until all available bandwidth is used and all network devices have more inbound frames than they can process.

Which ITIL Processes Relate to a Data Center Operations Group?

Article | Sep. 19, 2012

I recently responded to a message on LinkedIn from a regular reader of this blog. He asked several questions which I will answer over the course of several posts. As part of his first question, he described a strategy report that his group is producing. The audience for this strategy report considers ITIL important to the future of their business, and so he must describe which ITIL processes his data center operations group works most closely with.

What is the Difference Between Bridges, Hubs, and Switches?

Article | Aug. 14, 2012

The most obvious difference is that hubs operate at Layer 1 of the OSI model while bridges and switches work with MAC addresses at Layer 2 of the OSI model. Hubs are really just multi-port repeaters. They ignore the content of an Ethernet frame and simply resend every frame they receive out every interface on the hub. The challenge is that the Ethernet frames will show up at every device attached to a hub instead of just the intended destination (a security gap), and inbound frames often collide with outbound frames (a performance issue).

Does a MAC Address Mean Apple Invented It?

Article | July 12, 2012

While Apple has created many fine things, they were yet to be created themselves when Xerox PARC scientists created Media Access Control addresses. These MAC addresses are 48 bits or 6 bytes long, so they are also known as MAC-48 or EUI-48. EUI stands for Extended Unique Identifier. It is written in hexadecimal characters as shown below:

What is Twisted Pair and Does It Work?

Article | June 12, 2012

“Twisted Pair” is another way to identify a network cabling solution that’s also called Unshielded Twisted Pair (UTP) and was invented by Alexander Graham Bell in 1881. Indoor business telephone applications use them in 25-pair bundles. In homes, they were down to four wires, but in networking we use them in 8-wire cables. By twisting the pairs at different rates (twists per foot), cable manufacturers can reduce the electromagnetic pulses coming from the cable while improving the cable’s ability to reject common electronic noise from the environment.

What Kind of Network Am I On?

Article | March 01, 2012

Good question! There are lots of networks, so I’m sorry to say that it depends. Let me explain. The smallest computer-based networks are usually PANs or Personal Area Networks. They can connect a wireless keyboard, mouse, or other devices to a computer. You may find them wirelessly linking a printer to your computer. You may have noticed these all include wireless connections. A PAN most often uses wireless technologies like infrared and Bluetooth, so it is really a WPAN (Wireless Personal Area Network).

DHCP for Wireless LAN Clients

Article | Jan. 31, 2012

For us wireless folks that aren’t stellar routing and switching guys, one of the most daunting network tasks is integrating our WLAN infrastructure with the existing wired infrastructure and its services. Understanding wired design topics is pretty fundamental to installing or managing any network, so it really should be on our priority list to spruce up those skills. To give you a nudge on your journey, let’s talk about DHCP for wireless clients.

Network Forensics Analysis: A New Paradigm in Network Security

Webinar – Recorded | Oct. 26, 2011

In this hour-long webinar, security expert and Global Knowledge instructor Phillip D. Shade will provide insight into the emerging network security science of network forensics analysis, a.k.a. security event analysis and reconstruction. Using case studies, you will examine the role of data retention in network forensics analysis, and you will learn about applying forensics analysis techniques to handle application-based attacks, VoIP call interception, and worms, bots, and viruses.

Private VLANs: Advanced Switching Tips and Tricks

Webinar – Recorded | Oct. 10, 2011

In this hour-long webinar, Global Knowledge instructor John Barnes will guide you through implementing Cisco private VLANs. He will review VLANs and 802.1q, and he will discuss private VLAN fundamentals and operation, covering primary VLANs and secondary VLANs. He will cover VLAN mapping and discuss using private VLANs between multiple switches. He will also provide a use case example.

Are Production Server Reboots Standard Changes?

Article | April 27, 2011

I attended a meeting this week with a customer of mine and a potential new vendor. The new vendor was there to pitch his configuration and setup service offerings for a specific ITSM toolset. My customer has already had one bad experience with an ITSM tool configuration vendor who promised one thing and delivered much less. He ended up with a tool that’s minimally used and not configured to match his business needs. He’s looking for a vendor that can understand his business needs and priorities and quickly help him get his tool configured and working in a short time frame. Then the topic of standard changes came up. My customer asked for examples of standard changes. The vendor responded, “Server reboots are an example of standard changes.”

13 Skills Every IT Pro Should Know

Article | Nov. 12, 2010

No matter which IT field you're working in, there are several skills that are useful for every IT professional to know. Here, seven experienced IT professionals working in the networking, programming, project management, and security fields, share what they believe a...

Solving the Mysteries of Subnetting

White Paper | Feb. 11, 2010

Subnetting is a complicated topic that has confused students for a very long time. However, subnetting is an important topic for many different certifications with various vendors, including Cisco. In the real world environment, people are used to just punching in the numbers in many of the free subnet calculators that are readily available on the internet. For exam purposes, you still have to do this in a very fast manner since many exams are time-based and you don't have the luxury of spending those precious minutes on any single question. This Cisco training whitepaper will solve some of those age-old and complicated subnetting puzzles.

Static Routing

Article | July 14, 2009

You may have noticed that it’s the dynamic routing protocols that get all the glory. Since I like rooting (routing?) for the underdog, let’s talk about static routes! As you may recall, a router has three methods for learning a route. A route can appear in the routi...

Eleven Myths About 802.11 Wi-Fi Networks

Webinar – Recorded | Oct. 06, 2006

Wi-Fi networks have been misunderstood by much of the IT community since their inception. Even the reasons for this misunderstanding are kind of hard to understand. The result has been that myths about 802.11 (better known as Wi-Fi) networks have grown almost as fast as the technology itself. In this web seminar, we'll examine 11 common Wi-Fi myths and explore ways to use correct information to make your networks scalable, secure and satisfying for your users.