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Explain the functioning of Firewall Using Screening Router.
Firewall Using Screening Router:
The risk of break-within is large along with this form of firewall:
Every host onto the private network is exposed to the Internet and is ever a potential break-into point. Users who are unauthorized can detect and utilize internal addresses to access information into the firewall. To ignore break-into, screening routers can be set to seem the source address of every incoming IP header in place of the destination address, and drop private addresses which come through the Internet.
SQL Injection includes entering SQL code into web forms, eg. login fields, or into the browser address field, to access and manipulate the database across the site, application or
How do I connect to an SQL Server instance that is running on a machine with multiple instances of SQL Server 2000? Ans) Every instance of MS SQL Server must be listening on a d
a. Explain the hardware mechanism for handling multiple interrupt requests. b. What are handshaking signals? Describe the handshake control of data transfer during input and out
Process: pid start time end time priority timeslice list of CPU bursts list of IO bursts (the number of IO burst will always be 1 less than the number of CPU
In a DTMF phone a dialling of 8 generates (A) 1336 Hz- 770 Hz (B) 1209 Hz - 1477 Hz (C) 1209 Hz- 941 Hz (D) 1336 Hz-852 Hz
Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe
Differentiate between pre-emptive and non-pre-emptive scheduling. Pre-emptive scheduling : in its approach, center processing unit can be taken away from a process if there is a
The Internet has emerged as a major worldwide distribution channel for goods, managerial, services, and professional jobs. It has impacted market economics and industry structure,
Processes of Information System The basic purpose of the Information System is to convert and manage data into something that is meaningful. Bocij et al (2003) lists the basic
There are basically two methods of copying: Photocopying This is a modified development of photography. It is quite expensive and slow and is not often used for routine rep
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