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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

RIS: Remote Installation Services

1.      Hardware Requirements for installing Windows 2000 Prof. Or Server:

Hardware component

Windows 2000 Professional

Windows 2000 Server/ Advanced Server

Processor

Pentium/133MHz

Pentium/133MHz

Memory

64MB

256MB

HD space

640MB

1GB

Display

VGA or better

VGA or better

Network card

Optional

Optional (Required if you are installing over the network).

CD ROM Drive

Required

Required (unless loading from network)

2. In Windows 2000, if Passwords Must Meet Complexity Requirements” setting is enabled; the password should contain at least one character from minimum 3 of the following 4 categories.

1. Lower case alphabetic characters

2. Upper case alphabetic characters

3. Numbers

4. Special characters

3. The standard Windows 2000 NTFS permissions that can be applied to files are given below:

1.      Read: View the file's contents, attributes.

2.      Read& execute: Users can read and execute the file

3.      Write: Write, or append data to the file, view files attributes

4.      Modify: Users can read, write, execute, and/or delete the file

5.      Full Control: Users will have full control on the file. They can change the file permissions and take ownership of the file.

4. A Group Policy implemented on the local computer is known as "Local Group Policy". Local Group Policy files and folders are stored in the %systemroot%\System32\GroupPolicy folder.

5. Permissions:

1.      User and Group share permissions are additive. The least restrictive permission will be the users effective permission. One exception to this is "No Access". If a group has "No Access" to a share, then a user, who is member of the group will not have access to the share; even if the user is give "Full Control". No Access takes precedence over others.

2.      Microsoft Internet Explorer and Windows Explorer can be used for assigning Share and NTFS permissions.