Friday, August 2, 2019
What does GPU Stand for?
What does GPU Stand for?
- Great Pies Unit
- Graphics Programming Unit
- Graphical Processor Unit
- Graphics Processing Unit
EXPLANATION
A graphics processing unit (GPU) is a specialized electronic circuit designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device.
Your networked printer goes offline after printing a test page. What step will force it back online?
Your networked printer goes offline after printing a test page. What step will force it back online?
- Make it use a different driver
- Remove and Reinstall the printer
- Threaten its family with a magnetic knife of doom
- Toggle SNMP under Port Configuration
EXPLANATION
Here is a trick. When Windows (Server or Client) shows machine as offline, go the printer's web interface to see it's true status. If there is not an issue with web page (look at status, offline, online, ready, add paper, add toner...etc).If it shows as ready or online, then it's maybe a SNMP issue. You can go to driver properties and go to ports tab. Click Configure Port button, and uncheck SNMP enabled. Now Windows will always think the printer in online and ready to receive a print.
A good printer should wake up from sleep mode, if Windows sends a print job.
Good Luck.
A job is hung in your print queue and wont delete. How do you force it to delete?
A job is hung in your print queue and wont delete. How do you force it to delete?
- Turn the printer off then on
- Restart the Print Spool in Services
- Bust out your shaman gear, its spirit talking time
- Threaten the printer
EXPLANATION
Clear the Print Queue.This will often fix the problem on its own.
- Open the Services window (Windows key + R, type services.msc, press enter).
- Select Print Spooler and click the Stop icon, if it is not stopped already.
- Navigate to C:\Windows\system32\spool\PRINTERS and open this file. You may need to show hidden files or enter an administrator's password.
- Delete all contents inside the folder. Do not delete the PRINTERS folder itself. Note that this will remove all current print jobs, so make sure no one on your network is using the printer.
- Return to the Services window, select Print Spooler, and click Start.
In which layer of the OSI model would you find network switches?
In which layer of the OSI model would you find network switches?
EXPLANATION
The Application layer, layer 7, is the closest to the user. Hubs, switches, and routers operate at the lowest three layers of the OSI network model: the physical layer, data link layer and network layer.Hubs work at the first or Physical layer. It links all the devices connected to it and forms a single network. Each device that directly connects to the hub uses a port on the hub. When one device sends out a message to another device, the hub does not decide where the message goes. It just repeats the message to all the ports. Each device needs to decide whether this message is for itself or for others. One problem with hubs is that they share bandwidth among everyone. A telephone party line is like a hub. Each person decides by the ring if it is their phone call or someone else’s call, BUT, everyone can listen in on the call.
Switches operate at the Data Link or second layer. Switches are “intelligent” hubs. Switches can remember which ports are connected to which devices. When a switch receives a packet (data), it resends that packet directly to the correct port. For example, host A sends out a message through port A. The switch records into its switch table that host A is on port A. When host B decides to send a packet to host A, the switch first checks its switch table. If port A is registered in the switch table, it will resend the packet directly to port A instead of sending it to all the ports. This also means that switching gives dedicated bandwidth. A private phone call is like a switch. The phone number that is entered is looked up in the table and the correct telephone rings at the other end.
Routers are on the third layer, the Network layer. They are used to connect networks together. The Internet consists of many interconnected routers. Using a network protocol, like TCP/IP, a router can intelligently move data from one network to another. For example, when a user sends a request for a server, the router in the local network will check its routing table and decide where to resend the data. So, a router needs to have a better understanding of the whole network structure than does a switch. A long distance phone call uses a router like device. The initial one plus area code tells the system that the call is not local but needs to be routed to a distant phone network. The “phone router” then connects the call to the correct distant phone network.