BUSINESS DATA COMMUNICATIONS AND NETWORK
13th Edition
ISBN: 9781119441113
Author: FITZGERALD
Publisher: amazon.com
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Expert Solution & Answer
Chapter 11, Problem 4E
Explanation of Solution
Firewall capabilities:
- Firewall is a software or hardware-based network security device; it limits incoming and outgoing data traffic based on set of rules.
- It allows to access the internet but limits to access the internal data by the outsiders.
- It will not be able to provide the protection against the inside data theft.
- But, it protects the computers against unauthorized access, virus or malicious applications from the outer access.
Working of different types of firewall:
The working of different types of firewall are as follows:
- Packet level firewall
- It protects an internal network against illegal access and attack from a public or external network by blocking some packets.
- It finds the source and destination address of every network packet that passes over it.
- It only allow packets with acceptable source and destination addresses into or out of the organization’s networks...
Explanation of Solution
Cost of firewall:
- Each firewall is approximately 75 inches wide and 60 inches high which is totally 4,500 square feet.
- Assuming a $4...
Expert Solution & Answer
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Check out a sample textbook solution
Students have asked these similar questions
1. Show that S₁ = S2 if and only if S₁ U S2 = S₁n S2.
2. Show that if S1 and S2 are finite sets with |S₁ = n and |S₂| = m, then
S₁ U S2 ≤n+m.
3. If language L is regular and is given by L ={awa : w = {a, b} *}
Then show that L² is regular.
Problem 3: Consider the two-link planar elbow manipulator shown below with link information: a₁ = 3,
a₂ = 3.
a2
S
3/0
Link | a | ai | di
ai
| di | 0i |
มา
02
21
02.
12
01
0 0 01
02
0
0
02
01
To
(a) Find the location of the end-effector P° if the joint angles are:
0₁ = 140°, 0₂ = 30°
(b) Find the values of joint variables 01, 02 if the robotic manipulator is commanded to reach the desired
location of Pº = [4.5, 3,0]. Notice there are possibly two sets of solutions.
(c) Also sketch the two poses of the robot for the computed joint variables.
Page 5 of 7
Problem 5: The following shows the schematic of a SCARA robot and its DH parameters. Complete the
following questions based on this information.
20
01
21
02.
22
done by
ai
α;
di
Ꮎ ;
21
d3
1
a1
0
0
0₁**
2
a2
180°
0
0%
3
0
0
d3
0
The Jacobian matrix of this robot is given below:
-a1S1a2S12
-a2S12
J(q) =
a1c1 + a2c12
0
a2C12
0
10°
(a) For a₁ = 1, a2 = 2, is q = 180° a singularity configuration of this robot?
a1
3
[10°1
(b) For a₁ = 1, a2 = 2, is q = | 0° a singularity configuration of this robot?
3
Chapter 11 Solutions
BUSINESS DATA COMMUNICATIONS AND NETWORK
Ch. 11 - Prob. 1QCh. 11 - Prob. 2QCh. 11 - Prob. 3QCh. 11 - Prob. 4QCh. 11 - Prob. 5QCh. 11 - Prob. 6QCh. 11 - Prob. 7QCh. 11 - Prob. 8QCh. 11 - Prob. 9QCh. 11 - Prob. 10Q
Ch. 11 - Prob. 11QCh. 11 - Prob. 12QCh. 11 - Prob. 13QCh. 11 - Prob. 14QCh. 11 - Prob. 15QCh. 11 - Prob. 16QCh. 11 - Prob. 17QCh. 11 - Prob. 18QCh. 11 - Prob. 19QCh. 11 - Prob. 20QCh. 11 - Prob. 21QCh. 11 - Prob. 22QCh. 11 - Prob. 23QCh. 11 - Prob. 24QCh. 11 - Prob. 25QCh. 11 - Prob. 26QCh. 11 - Prob. 27QCh. 11 - Prob. 28QCh. 11 - Prob. 29QCh. 11 - Prob. 30QCh. 11 - Prob. 31QCh. 11 - Prob. 32QCh. 11 - Prob. 33QCh. 11 - Prob. 34QCh. 11 - Prob. 35QCh. 11 - Prob. 36QCh. 11 - Prob. 37QCh. 11 - Prob. 38QCh. 11 - Prob. 39QCh. 11 - Prob. 40QCh. 11 - Prob. 41QCh. 11 - Prob. 42QCh. 11 - Prob. 43QCh. 11 - Prob. 44QCh. 11 - Prob. 45QCh. 11 - Prob. 46QCh. 11 - Prob. 47QCh. 11 - Prob. 48QCh. 11 - Prob. 49QCh. 11 - Prob. 50QCh. 11 - Prob. 51QCh. 11 - Prob. 52QCh. 11 - Prob. 53QCh. 11 - Prob. 54QCh. 11 - Prob. 1ECh. 11 - Prob. 2ECh. 11 - Prob. 3ECh. 11 - Prob. 4ECh. 11 - Prob. 5ECh. 11 - Prob. 6ECh. 11 - Prob. 7ECh. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Prob. 3MCCh. 11 - Prob. 4MCCh. 11 - Prob. 5MCCh. 11 - Prob. 6MCCh. 11 - Prob. 7MC
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