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  • 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 to stop channel interference on 802.11x wireless access points

    Networking expert Lisa Phifer explains how to identify interference on the WLAN, how to stop 802.11x networks from overlapping and gives advice against other forms of interference.

  • How to create a Wi-Fi hotspot

    Creating a Wi-Fi hotspot can be done one of two ways. Our site wireless networking expert Lisa Phifer explains how to create a prepaid hotspot from the ground up.

  • Where is Sudhanshu Gupta's most recent routing and switching advice?

    For our routing and switching expert, Sudhanshu Gupta's, latest advice, view his Public Profile on the IT Knowledge Exchange: http://itknowledgeexchange.techtarget.com/profile/Sudhanshu/

  • Where can I find Puneet Mehta's most recent network security advice?

    To view network security expert Puneet Mehta's latest advice, see his Public Profile on the IT Knowledge Exchange: http://itknowledgeexchange.techtarget.com/profile/Puneet/

  • Is the A+ certification a CCNA exam prerequisite?

    Cisco certification expert David Minutella explains whether or not CompTIA A+ certification is necessary to tackling the CCNA exam.

  • What wireless networking certifications are available?

    Our Cisco certification expert, David Minutella, lists the certifications available to networking professionals looking to specialize in wireless communications.

  • What's the best Cisco router to practice my CCNA and CCNP exams on?

    Our Cisco certification expert recommends the best router for practicing and learning your CCNA and CCNP exams, in this response.

  • What salaries and jobs align with CCIE, CCNA, and CCNP certifications?

    The CCIE, CCNA, and CCNP Cisco certifications along with work experience are aligned to these job opportunities and salary ranges according to our training and Cisco certification expert, David Min...

  • How does IPv6 benefit current and future applications?

    IPv6 benefits current and future applications on the network. Learn what impact and effects the Internet Protocol version 6 brings, from our IPv4/IPv6 expert.

  • What does node-local mean in IPv6 in terms of multicast scope?

    In terms of multicast scopes, learn what node-local means in this definition by our Internet Protocol version 6 (IPv6) expert, Silvia Hagen.

  • Does IPv6 abandon TCP/IP fragmentation?

    Is TCP/IP fragmentation abandoned in IPv6? Our expert, Silvia Hagen, explains the packet routing process in this answer.

  • How do you calculate ROI costs for an IPv6 implementation/migration?

    Calculating the return on investment (ROI) and the cost of your IPv6 network migration depends on the factors our expert describes in this response.

  • Can Network Address Translation work without static IP addresses?

    Find out how Network Address Translation (NAT) works with static and dynamic IP addresses and what the most common type of NAT is from our networking fundamentals expert.

  • Why are TCP/IP networks considered unsecured?

    Learn why TCP/IP networks are considered unsecured from our networking security expert, Michael Gregg.

  • Troubleshooting networks: Can vendor software self-install firewalls?

    Can firewalls block the use of a shared folder after the installation of a router? Our network security expert troubleshoots this wireless connection problem using these steps.

  • Difference between circuit-switching and packet-switching in examples

    What is the difference between a circuit switching and packet switching? Our networking fundamentals expert gives examples of packet switching and circuit switching in this response.

  • VLANs versus IP subnets: Why use a VLAN over IP subnetting?

    A virtual local area network (VLAN) is better than IP subnetting because its advantage is security. Learn what a VLAN is and how it differs from creating IP subnets, in this expert response from ou...

  • How to link wired LANs using wireless network bridges and APs

    Our wireless networking expert aids an administrator deploy a WLAN in this response to the question "How can I link my wired LANs using ZyXEL's B-3000 access point (AP) and B-420 wireless bridges?"

  • How wireless network encryption affects signal strength, connectivity

    Our wireless networking expert explains how Wi-Fi encryption could affect signal strength and therefore connection loss, in this expert explanation.

  • Why error reporting ICMP messages include IP headers and datagram data

    Learn why Internet Control Message Protocol (ICMP) error reports include IP headers and the first 8 bytes of datagram data in this response from our network administration expert.

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