Add or Remove a Computer from the Domain
Using a simple command, you can add or remove a computer from the domain.
Show hidden files and folders Doesn’t Work
A common virus disables the Show hidden files and folders function in Windows XP. Here is how to enable it again. The symptom of this problem is every time you select the Show hidden files and folders options under Folder Options, the screen just flashes when you click OK and the hidden files and folders are not unhidden.… Read More »
Use Cached Exchange Mode Option is Grayed Out
You can’t enable Use Cached Exchange Mode because it is grayed out. This is likely because of a Group Policy that is in effect on your computer. If you are on a company network, you might want to contact an administrator to disable it. Otherwise, you can try to enable it yourself.
Lock the taskbar Option is Grayed Out
If the Lock the taskbar option is grayed out under Taskbar and Start Menu Properties, a registry change can solve the issue.
Application Layer Details
The application layer is the seventh level of the seven-layer OSI model. It interfaces directly to and performs common application services for the application processes; it also issues requests to the presentation layer.
Presentation Layer Details
The presentation layer is the sixth level of the seven layer OSI model. It responds to service requests from the application layer and issues service requests to the session layer.
Introduction to Network Protocols
The word protocol is derived from the Greek word “protocollon” which means a leaf of paper glued to manuscript volume. In computer protocols means a set of rules, a communication language or set of standards between two or more computing devices. Protocols exist at the several levels of the OSI (open system interconnectivity) layers model. In the telecommunication… Read More »
LLC Sublayer Details
According to the IEEE 802 family of standards, Logical Link Control (LLC) is the upper sublayer of the OSI data link layer. The LLC is the same for the various physical media (such as Ethernet, token ring, and WLAN).
MAC Sublayer Details
The Media Access Control (MAC) data communication protocol sub-layer, also known as the Medium Access Control, is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multipoint network, typically a… Read More »
Transport Layer Details
In computing and telecommunications, the transport layer is the second highest layer in the four and five layer TCP/IP reference models, where it responds to service requests from the application layer and issues service requests to the network layer. It is also the name of layer four of the seven layer OSI model, where it responds to service… Read More »