Have a question about networking, telecommunications, broadband, Wireshark, or technology in general? You’ve come to the right place. Our Frequently Asked Questions section provides answers to many of the most common questions we receive about CellStream’s consulting services, technical training programs, online courses, and industry expertise.
In addition to information about our products and services, you’ll find helpful explanations, technical guidance, and answers to a variety of networking and computing topics. If you don’t find what you’re looking for, we’re always happy to help—simply contact us and we’ll do our best to provide the information you need.
We hope you find these resources informative, practical, and valuable in your professional and technical journey.
Post Views: 2,044 Great questions! I think the best way to answer the question is to describe what each one is. I will start with Cisco ONE. Cisco ONE ONE stands for “Open Network Environment”. The idea is to allow programmability of the network and the network elements. This allows for consistency across both physical
What is Cisco ONE and Cisco OnePK? Read More »
Post Views: 1,806 Here is my quick list of commands you can run from the Windows Command Line: (START> RUN> CMD) ADDUSERS Add or list users to/from a CSV file ARP Address Resolution Protocol ASSOC Change file extension associations ASSOCIAT One step file association AT Schedule a command to run at a later time ATTRIB
What commands can you run from the Windows Start> Run> CMD? Read More »
Post Views: 1,426 This is a very common question. First, we must warn of the difference between theoretical speed and actual speed. You have probably heard this a million times, but there are so many factors that can affect wireless throughput. I won’t go into them here so I can stay on the subject. 802.11n
What are the wireless speeds for 802.11n 802.11ac and 802.11ad? Read More »
Post Views: 1,337 We have met many people who are considering virtualization of servers in a number of different scenarios. Some of these folks are just getting started with virtualization, which can be a big change in light of shrinking budgets and limited supporting infrastructure such as shared storage. Some folks have already done some
Should everything be “Virtualized”? Read More »
Post Views: 13,349 Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School A great question I was asked in class was: “If Neighbor Discovery processes have replaced ARP in ICMPv6, how do you look at the equivalent of the
Neighbor Discovery (ND) Table in IPv6 Windows, Linux and MAC Machines Read More »
Post Views: 1,762 This is a common question I get asked at many of my classes. Staying on top of technical news and the Internet is sometimes a challenge The short answer is that I really can’t keep track of it all – I don’t think anyone can. But here is how I track what
How do you stay on top of technical news and the Internet? Read More »
Post Views: 1,392 This is a great question. First, you have probably learned that you can use Ubuntu’s APPLICATIONS > INTERNET> TERMINAL SERVER CLIENT program to remote desktop to Windows machines. Going the other way is a bit more challenging. You need to have two things in place: 1. You must enable remote desktop connections
How do you Remote Desktop from Windows to Ubuntu? Read More »
Post Views: 2,146 Ah – a common problem. Wireshark has installed and does not see any of the computer interfaces so you can do captures. The answer to your problem is simple! Open a terminal and enter the following commands in order (you can skip the first one if you already have Wireshark installed): sudo
How do I get Linux/Ubuntu to show interfaces in Wireshark? Read More »
Post Views: 1,840 How do I get to the Online School, you ask? The answer is easy – go to https://netscionline.com Registration is completely free – and you get access to the Reference Library and any of our free courses. Other courses are paid via paypal, or your company will provide you access information. To register
How do I get to the Online School? Read More »
Post Views: 1,780 The answer is – possibly – yes, unless you have explicit permission to access the network (such as a free WiFi hotspot at the airport or town square). Many states have criminal laws that prohibit accessing any computer or network without the owner’s permission. For example, in Texas, the statute is Penal
Could I be breaking the law if I connect to an unsecured wireless network? Read More »
Post Views: 1,661 Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School IPv6 introduces a 128 bit IP address for both source and destination address fields. This means that, in total, there are 2^128 addresses possible with
Post Views: 1,516 This is a great question – and great news – there is an app for that!! Well, at least there is a web site. Based on millions of recent test results from Speedtest.net, there is an index that compares and ranks consumer download speeds around the globe. Also plotted is the value
How fast is the Internet for the average user worldwide? Read More »
Post Views: 2,165 The National Telecommunications and Information Administration (NTIA) has recently made a great web site available to all of us that maps and lists broadband service providers, by area. Simply go to this link: www.broadbandmap.gov The online broadband database apparently holds more than 25 million records detailing where service is available; technology used
What Broadband services are offered in my area? Read More »
Post Views: 1,305 There is no one “great” answer to this question. Usually saving disk space also maximizes performance of your computing platform. We fundamentally recommend: a) proper maintenance (see other tips below) and b) the occasional ‘spring cleaning’ (as also discussed below) combined with the c) use of a utility to clean your unused
How can I save Disk Space? Read More »
Post Views: 1,439 Two answers to this one: sort of, and absolutely. Sort of means you can go to these sites and select to deactivate your account. The problem is that while it is deactivated, all your information, history, friends lists, postings, tweets, etc. are all maintained. You can reactivate almost any time you want.
Can I erase my accounts on Facebook, Twitter, etc.? Read More »
