PCS Blog

PCS has been serving the Knoxville area since 1996, providing IT Support such as technical helpdesk support, computer support, and consulting to small and medium-sized businesses.

Faxploit: Hundreds of Printers Putting Businesses at Risk of Malware

Faxploit: Hundreds of Printers Putting Businesses at Risk of Malware

Printers, along with every other piece of equipment that is on your network, require careful configuration and regular upkeep to ensure that they aren’t putting your data and users at risk. Security researchers recently discovered two massive vulnerabilities in HP Officejet All-in-One printers that make it incredibly easy for hackers to spread malware and gain access to a company’s network.

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Budgeting for IT Can Benefit Your Business’ Bottom Line

Budgeting for IT Can Benefit Your Business’ Bottom Line

Your business depends on a budget to come out in the black at the end of the fiscal year, and the way you invest that budget will have a considerable impact. As you create this budget, your IT needs to be one of your top considerations - after all, it is what effectively powers the modern business. Here, we’ll discuss how diligently incorporating your IT into your budget can help your business be more successful down the line.

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UTM is a Strong Solution to Ward Off Hackers

UTM is a Strong Solution to Ward Off Hackers

When your employees think about hackers and network security, do they picture some cloaked or hooded figure in a dark room typing away at a keyboard? Do they see a recluse living in their mother’s basement? Popular culture has given many users a false sense of reality regarding hacking attacks and the culture surrounding them, and it can come at the detriment of your business.

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Benefits of Upgrading to 802.11ax and Should You Do It

Benefits of 802.11ax

OFDMA
Orthogonal Frequency Division Multiple Access - this is the new modulation technique introduced with 802.11ax and replaces OFDM that has been around since 802.11a. This is the same modulation used by cell phone carriers to transmit data to and from your cell phone. This modulation assigns each client resources units (RU) that can dynamically change based on the application needs of the client. Without going too in depth, I’ll use an analogy to show the difference between OFDM and OFDMA – OFDM would be the equivalent to driving a country road and getting to a one lane bridge and OFDMA would equate to a multi-lane interstate. When driving the country road, it doesn’t matter what you drive or how fast you go, if it isn’t your turn to cross the bridge, you aren’t moving. In OFDM, only one device can transmit at a time. If 2 vehicles crossed that bridge at the same time, they have a collision and then all the cars waiting are now affected. The same is true for OFDM. If two clients try to transmit at the same time, such as a hidden node, the frames from the clients will be corrupt and will have to retransmit. Constant retransmissions eat away available airtime for other clients and therefore slow your wireless network down. In contrast, OFDMA is like a huge multi-lane interstate where you have lanes for the fast cars and the slow cars. You even have enough lanes for the wide load trucks to occupy 2 lanes without impacting the flow of traffic. OFDMA lets multiple clients send and receive data at the same time. This is done by breaking one channel into a lot of subchannels or resource units (RU). The AP can then dynamically assign RUs to each client based on their needs. This is a much more efficient way to transfer data over the air and aggregate throughput in a wireless network will increase greatly over an 802.11ac network.

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Interactive Touch Technology in the Classroom

ActivTable-Blog

To kick off the new school year, Kim Seebach has a new addition to her Special Education classroom at Maryville City Schools – a Promethean ActivTable. Kim has already had a Promethean ActivBoard for some time that she’s used to teach language arts, math, communication, language, and life skills in her classroom. She's already familar with and loves Promethean technology and with the addition of an ActivTable, it gives her students who can’t use the board an alternative option.

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