Network Management Strategies for the CIO
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Network bandwidth calculators: What will be my WAN's link speed?
Use this recommended bandwidth calculator to calculate network latency and your WAN's link speed. Our network administration expert says this tool can simulate 1,000 users in your environment.
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How to upgrade Windows Server 2003 to Server 2008
Use these resources recommended by our network administration expert to upgrade from Windows Server 2003 to Windows Server 2008, in this expert response.
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How a TV station tower will affect your wireless network
Learn how to normalize the effects a TV station tower might have on your wireless network in this expert response explaining radio frequencies.
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CCNA exam preparation: How to take tests faster
To prepare for your Cisco Certified Networking Administrator (CCNA) certification exam, use these time-saving techniques to speed up your test-taking so that you don't run out of time.
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How to calculate subnet masks in IPv6
Find out from our IPv6 (Internet Protocol Version 6) expert whether or not calculating a subnet mask in IPv6 is different than calculating a subnet mask in IPv4.
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Calculating subnets for IP addresses in IPv6
Understand how subnetting in IPv6 differs from that of IPv4 and what you need to do in order to calculate the subnet of an IP address in IP version 6.
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IP addressing in IPv6
Understand the differences between network IP addressing in IPv6 and IPv4. Our expert, Silvia Hagen, explains the advantages and disadvantages of calculating IP addresses for each version.
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What environmental factors cause switch connectivity to fail?
If the power on your network's switch is fine, but the connectivity is not, ask yourself these questions posed by our switching expert to troubleshoot for environmental issues that may be causing t...
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How can I pass the CCNA exam without spending any money?
Is there any way to pass the CCNA exam without spending any money? Find out from our Cisco certification expert, David Minutella.
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Are there beginner certifications to take before Cisco's CCNA exam?
Even though Cisco's CCNA certification is a beginner course, if you're new to networking, passing this exam is daunting. Try the starter certifications our Cisco expert suggests in this piece of ad...
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Why do Linksys WMP300N wireless cards have three antenna connectors?
Before you make a larger antenna for your wireless network card, know how the Linksys WMP300N connects to its antenna, and understand why it has three connectors.
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Can building T3 lines using satellite be cheaper than a carriers'?
Would building your own T3 leased line be cheaper than a standard carrier's service? Our networking fundamentals expert explains this and how a large capacity link reacts over satellite communicati...
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Differences between WLANs, Wi-Fi and WiMax
Wireless networking expert Lisa Phifer explains the differences between WLAN, WiMax and Wi-Fi and provides an excellent tutorial on what separates Wi-Fi from WLAN.
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LANs vs. WLANs: Which network designs are used for each company size?
Which network design is easier to implement, LANs or wireless LANs? Our network administration expert explains this and which designs best fit particular functions and areas of your organization.
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How can I block my competitor's IP address range from my website?
Are you looking for free network tools to find an IP address range? This advice from our security expert shows you whois tools available to you and then explains how to block these ranges from view...
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Controlling network access by MAC address restriction on wired networks
If you've used MAC address restriction to control your network access on your wireless router, can you extend this to your wired network? Our security expert explains in this response.
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Retrieve network resources and email after installing ISA Server 2004
After a Microsoft ISA Server 2004 Standard Edition installation, learn how to retrieve email and access to network resources in this expert explanation on how to adjust your Internet Security and A...
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Why are patch panels required for cabling networks?
When cabling networks, you may wonder why it's a requirement to have patch panels and why they aren't connected to switches. This expert response explains why and how they're used in a rack with mu...
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How to configure Cisco's 3750 Layer 3 switch for fallback IOS booting
Our switching expert explains how to configure your Cisco 3750 Layer 3 (L3) switch to automatically boot your system from the IOS kept on the TFTP server, in this response on fallback booting.
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Which exams must I pass for CCVP and CCNP recertification?
To recertify for Cisco's networking certifications, CCNP and CCVP, you have a these options.
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BYOD security: Which VPN is best for you, IPsec or SSL?
By 2016, 40% of the workforce will be mobile. IPsec VPNs are being widely discussed for BYOD security. But should we also be talking about SSL VPNs?
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Why should you care about SDN?
Expert Jim Damoulakis weighs in on the potential of software-defined networking, or SDN, and why you should care.
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Can you really have security, convenience and BYOD?
Employee-owned devices can seriously undermine security. But bring your own device is probably here to stay. So what should IT do?
Submit a question to our experts