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  • Ask the Experts
  • Pros and cons of integrated appliances

    Integrated appliances incorporate storage, processing and networking into one single product. But are they always a good choice?

  • Provisioning IT services with the cloud

    Using public cloud services requires diligent enterprise IT management of the cloud provider to make it a success.

  • Should you ever not use a firewall?

    There are many new network security devices on the market today. Expert Chris Partsenidis opines on whether these can replace firewalls.

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Expert Answers

  • 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.

  • 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...

  • 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.

  • 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...

  • 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.

  • 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.

  • 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...

  • 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...

  • 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.

  • 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...

  • 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.

  • How to boost the wireless ranges of laptops

    Learn how to boost the wireless range of a laptop computer so that you can reach the access point of a service provider in this how-to by wireless networking expert Lisa Phifer.

  • 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.

  • What software monitors and locks users from accessing my router?

    Learn which software programs monitors and locks unauthorized users from accessing your router for Internet use in this expert response with our network security expert, Michael Gregg.

  • Can IP addresses of LANs that make up a WAN be the same?

    Our networking fundamentals expert answers whether the IP addresses of different physical locations (LANs) making up a WAN can be the same address. Find out if networks with the same IP address wil...

  • On a full-duplex T1 circuit, what's the bandwidth speed in both directions?

    Find out if a full-duplex T1 circuit splits its bandwidth between the TX and RX directions.

  • Which wireless client vendor will keep my network from disconnecting?

    Learn which vendors provide universal wireless clients for Windows laptops that may address network and Internet disconnects as well as missing profile problems, in Ask the Expert response from Lis...

  • Which wireless network transmits business-sensitive data reliably?

    Our wireless networking expert explains whether WLANs, WWANs or WiMax setups are more reliable and secure for transmitting business critical data to keep enterprise information from being lost.

  • Why do we need IP security at the network layer?

    Learn why IP security (IPsec) is needed at the network layer -- otherwise known as Layer 3, or L3, of the OSI model. Our enterprise networking security guru explains.

  • What power supply problems do 802.11n wireless networks pose?

    The power supply requirements demanded of 802.11n wireless networks won't be affordable for enterprises until the IEEE standard and supporting network hardware are approved and have caught up. Here...

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