EBK NETWORK+ GUIDE TO NETWORKS
8th Edition
ISBN: 9781337671644
Author: ANDREWS
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 10, Problem 15RQ
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- If they fail to update, as a result, the firewall becomes outdated and develops compatibility problems with recent technologies.
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Problem 5: The following shows the schematic of a SCARA robot and its DH parameters. Complete the
following questions based on this information.
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The Jacobian matrix of this robot is given below:
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(b) For a₁ = 1, a2 = 2, is q = | 0° a singularity configuration of this robot?
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(c) Consider the following sequence of rotations:
1) Rotate by 130° about the world z-axis
2) Rotate by 45° about the current x-axis
3) Rotate by -30° about the world/fixed y-axis
Compute the resulting overall rotation matrix R. Notice that you need to provide the numerical
solution to the matrix R.
(d) Find R giving the following rotation matrices.
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Problem 1: Complete the following problems.
(a) Let {A}, {B}, {C}, {U} denote four frames. Given the transformations HU, HR, HG, find the
transformation matrix H.
Yeah York Austri, R. Noude that you need to provide
(b) Frame {A} has three axes denoted by RA, PA, 2A, respectively. Frame {B} is obtained by rotating about
YA by 30° and then subsequently translating along A axis by 2 units. Find the resulting
homogeneous transformation matrix HA.
Chapter 10 Solutions
EBK NETWORK+ GUIDE TO NETWORKS
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