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Packet Switching Networks Packet Switching - Packets are relayed across network along the best route available.
Repeater = Physical layer - takes a weak signal and regenerates it - doesn't translate or filter anything - can move packets from on physical media to another (i.e. can connect thinet to fiber-optic) - they are cheap - will pass a broadcast storm
Bridge = Data Link layer - does everything a repeater does - reduce traffic by segmenting the network by using a routing table- regenerate the signal at the packet level - not suited to WANs slower than 56K - will pass broadcast storms - read the source and destination of every packet - pass packet with unknown destinations - connect dissimilar networks (i.e. Token Ring and Ethernet)
Router = Network layer - does filtering and isolating traffic - forwards particular protocols to particular addresses (other routers) - connect network segments - not all protocols are routeable (LAT and NetBEUI) - are used in complex network situations because they provide better traffic mgmt. than brides - don't pass broadcast traffic.
Brouter = combines best qualities of both a bridge and a Router - can act like a Router for one protocol and bridge all of the others (nonroutable) - delivers more cost-effective
 

 
 
 

 

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MCSE : Security Specialist

21.     By default a printer is set to “Always Available”. However, you can choose “Available from” button and set the timings for the availability of the printer. To go to this option, Right click on the desired printer, select Properties, and then click on Advanced tab. You can also set the separator page in the Advanced tab.

22.     To configure a standby print device, use Properties -> Ports

Here you have two options:

1.      To send documents to another printer on the same print server, click the port to which the other printer is assigned and then click OK

2.      To send documents to a printer on a different print server, Click “Add Port -> Local Port -> New Port”. Type the name of the other print server and the share name of the shared printer in the form \\second_print_server\share_name

 

23. The various file systems supported by Windows 2000 are:

    1. FAT: Also called FAT16, supported by all Microsoft Operating Systems.
    2. FAT32: Also supported by Win 95 OSR2 and Win98
    3. NTFS: This is not supported by Win95/98
    4. CDFS (Compact Disk File System, used to access CDs)
    5. UDF (Universal Disk Format, used to access DVDs)