Firewall: Firewall is a hardware or software program that lets the files to enter into the network based on privacy. It is present at the gateway of the network. Firewall is used to protect the traffic flow and privacy in the network. In LAN (Local Area Network), Firewall can reduce the amount of damage. Causes of firewall failure: Firewall misconfiguration: The most common firewall failure is firewall misconfiguration. Configuring a high-quality firewall can take some days to achieve the best result. The low-quality firewall does not allow the authorized user to send or receive the necessary data. It occurs during security change processes, which means if new rules are added or previous ones removed or changed on a firewall. Hardware bottlenecks: The user hardware can create problems for the firewall. When the user loaded too many data at that time, the hardware is unable to keep up with the load, then the network performance will suffer and the applications will start to slowly run. Compatibility problem: Once the firewall is installed, the IT administrator must ensure that it is constantly updated. If they fail to update, as a result, the firewall becomes outdated and develops compatibility problems with recent technologies.

Question

Given the following addresses, which two addresses conflict in the cache: The numb of locations in the cache is 2048, the cahche is indexed by address bits 15 to 5 and the tag bits are from 31 to 16. (a) 0x0000 0100 (b) 0x0000 1400 (c) 0x0010 0100 (d) 0x0100 0140

Answer 1

Question

Chapter 8, Problem 18RQ

Program Plan Intro

Firewall:

Firewall is a hardware or software program that lets the files to enter into the network based on privacy. It is present at the gateway of the network.

Firewall is used to protect the traffic flow and privacy in the network.

In LAN (Local Area Network), Firewall can reduce the amount of damage.

Causes of firewall failure:

Firewall misconfiguration:

The most common firewall failure is firewall misconfiguration. Configuring a high-quality firewall can take some days to achieve the best result. The low-quality firewall does not allow the authorized user to send or receive the necessary data.

It occurs during security change processes, which means if new rules are added or previous ones removed or changed on a firewall.

Hardware bottlenecks:

The user hardware can create problems for the firewall. When the user loaded too many data at that time, the hardware is unable to keep up with the load, then the network performance will suffer and the applications will start to slowly run.

Compatibility problem:

Once the firewall is installed, the IT administrator must ensure that it is constantly updated.

If they fail to update, as a result, the firewall becomes outdated and develops compatibility problems with recent technologies.

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