1- Why did DTGOV add dynamic scaling to the infrastructure?
3- Why did DTGOV choose dynamic scaling?
First question:
I would discuss all the different types of dynamic scaling (a-c below) and how the automated scaling listener is configured with workload thresholds? Discuss Dynamic allocation?
The big thing is relating all of that information back to why did DTGOV add this to their infrastructure… because it had all these important areas (a-c, d-F, workload thresholds, Dynamic allocation..just are a few).
1. Dynamic Horizontal
2. Dynamic Vertical
3. Dynamic Relocation
In addition, you can discuss- Cloud architecture for Dynamic Scalability (pg 264)
1. Cloud usage monitor?
2. Hypervisor?
3. Pay-per-use monitor?
Third Question:
For question three I would choose one or two of the different Architectures listed above (1-8 are a few examples) and discuss why Dynamic Scaling Architecture found on page 262 was added versus these other ones.
More clarification on how I think the questions should be worded:
First question is explain why they added it because of all the awesome areas dynamic scaling does and the second question should be worded as why did they choose dynamic scaling over the other architecture’s?
1
-
Why did DTGOV add dynamic scaling to the infrastructure?
3
-
Why did DTGOV choose dynamic scaling
?
First question:
I would discuss all the different types of dynamic scaling (a
-
c below) and how the
automated scaling listener is configured with workload thresholds? Discuss Dynamic
allocation?
The big thing is relating all of that information back to why did DTGOV add this to their
infrastructure… because it had all these important areas (a
-
c, d
-
F, workload thresholds,
Dynamic allocation..just are a few).
1.
Dynam
ic Horizontal
2.
Dynamic Vertical
3.
Dynamic Relocation
In addition, you can discuss
-
Cloud architecture for Dynamic Scalability (pg 264)
1.
Cloud usage monitor?
2.
Hypervisor?
3.
Pay
-
per
-
use monitor?
Third Question:
For question three I would ch
oose one or two of the different Architectures listed above
(1
-
8 are a few examples) and discuss why Dynamic Scaling Architecture found on page
262 was added versus these other ones.
More clarification on how I think the questions should be worded:
First
question is explain why they added it because of all the awesome areas dynamic
scaling does and the second question should be worded as why did they choose
dynamic scaling over the other architecture’s?
1- Why did DTGOV add dynamic scaling to the infrastructure?
3- Why did DTGOV choose dynamic scaling?
First question:
I would discuss all the different types of dynamic scaling (a-c below) and how the
automated scaling listener is configured with workload thresholds? Discuss Dynamic
allocation?
The big thing is relating all of that information back to why did DTGOV add this to their
infrastructure… because it had all these important areas (a-c, d-F, workload thresholds,
Dynamic allocation..just are a few).
1. Dynamic Horizontal
2. Dynamic Vertical
3. Dynamic Relocation
In addition, you can discuss- Cloud architecture for Dynamic Scalability (pg 264)
1. Cloud usage monitor?
2. Hypervisor?
3. Pay-per-use monitor?
Third Question:
For question three I would choose one or two of the different Architectures listed above
(1-8 are a few examples) and discuss why Dynamic Scaling Architecture found on page
262 was added versus these other ones.
More clarification on how I think the questions should be worded:
First question is explain why they added it because of all the awesome areas dynamic
scaling does and the second question should be worded as why did they choose
dynamic scaling over the other architecture’s?
HOME WORK – 4 Due: Monday, July 16th , 2018 (before class begins)
1. In an experiment to study the relationship of hypertension and smoking habits, the following data are collected for 180 individuals:
Nonsmokers Moderate Smokers Heavy Smokers
Hypertension 21 36 30
No hypertension 48 26 19
If one of these individuals is selected at random, find the probability that the person is
a. experiencing hypertension, given that the person is a heavy smoker; b. a nonsmoker, given that the person is experiencing no hypertension.
2. For married couples living in a certain suburb, the probability that the husband will vote on a bond referendum is 0.25, the probability that the wife will vote on the referendum is 0.20. The
probability that a husband will vote on the bond referendum, given that his wife will vote, is 0.75.
What is the probability that
a. both husband and wife will vote? b. a wife will vote, given that her husband will vote? c. at least one member of a married couple will vote?
3. A large industrial firm uses three local motels to provide overnight accommodations for its clients. From past experience, it is known that 20% of the clients are assigned rooms at the
Ramada Inn, 50% at the Sheraton, and 30% at the Lakeview Motor Lodge. If the plumbing is
faulty in 5% of the rooms at the Ramada Inn, in 4% of the rooms at the Sheraton, and in 8% of
the rooms at the Lakeview Motor Lodge. Given that a client was assigned a room having faulty
plumbing, what is the probability that she was assigned accommodations at the Lakeview Motor
Lodge?
4. An oil exploration company currently has two active projects, one in Asia and the other in Europe. Let A be the event that the Asian project is successful and B be the event that the
European project is successful. Suppose that A and B are independent events with 𝑷(𝑨) = 𝟎. 𝟒 and 𝑷(𝑩) = 𝟎. 𝟕.
a. If the Asian project is not successful, what is the probability that the European project is also not successful? Explain your reasoning.
b. What is the probability that at least one of the two projects will be successful? c. Given that at least one of the two projects is successful, what is the probability that only
the Asian project is successful?
5. A particular airline has 10 A.M. flights from Chicago to New York, Atlanta, and Los Angeles. Let A denote the event that the New York flight is full and define events B and C analogously for
the other two flights. Suppose 𝑷(𝑨) = 𝟎. 𝟔, 𝑷(𝑩) = 𝟎. 𝟓, 𝑷(𝑪) = 𝟎. 𝟒 and the three events are independent. What is the probability that
a. all three flights are full? b. That at least one flight is not full? c. only the New York flight is full? d. That exactly one of the three flights is full?
Homework 5 Due: Tuesday, July 17th (before class begins)
1. A shipment of 30 similar laptop computers to a retail outlet contains 10 that are defective. A school makes a random purchase of 5 of these computers. Let X denotes the number of defective
computers.
a. Find the probability distribution of X. b. Find mean and variance of X. c. Find 𝑬(𝟒𝑿 + 𝟏) 𝒂𝒏𝒅 𝑽𝒂𝒓(𝟑𝑿 − 𝟏𝟎).
2. An appliance dealer sells three different models of upright freezers having 13.5, 15.9, and 19.1 cubic feet of storage space, respectively. Let of storage space purchased by the next customer to
buy a freezer. Suppose that X has pmf
a. If the price of a freezer having capacity X cubic feet is 25X - 8.5, what is the expected price paid by the next customer to buy a freezer?
b. What is the variance of the price 25X -8.5 paid by the next customer? c. Suppose that although the rated capacity of a freezer is X, the actual capacity is
𝒉(𝑿) = 𝑿 − 𝟎. 𝟎𝟏 𝑿𝟐. What is the expected actual capacity of the freezer purchased by the next customer?
3. A random variable X has the following pmf:
𝒙 1 3 4 6 10 12 16 𝒑(𝒙) 0.1 0.15 0.2 0.25 0.15 0.1 0.05
a. Find the cumulative distribution function of X, F(x). b. Sketch a graph of F(x) c. compute 𝑷(𝟑 ≤ 𝑿 ≤ 𝟔) 𝒂𝒏𝒅 𝑷(𝑿 > 𝟒)
4. A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25% of the incoming calls involve fax messages and consider a sample of 12 incoming calls. What
is the probability that
a. at most 5 of the calls involve a fax message? b. at least 3 of the calls involve a fax message? c. What is the expected number of calls among the 12 that involve a fax message? d. What is the standard deviation of the number among the 12 calls that involve a fax
message?
e. What is the probability that the number of calls among the 12 that involve a fax transmission exceeds the expected number by more than 2 standard deviations?
5. Calls received by a car rescue service occur independently and at a constant average rate of 3 per minute.
a. Find the probability that, in a randomly chosen period of 1 minute, the number of calls received by the service is
(I ) at most 3
(II) at least 3
(III) between 2 and 5 (inclusive)
b. Find the probability that, in a randomly chosen period of 2 minute, the number of calls received by the service is at most 5.
𝒙 13.5 15.9 19.1 𝒑(𝒙) 0.2 0.5 0.3
DTGOV discovers that a number of additional mechanisms and technologies need to be assembled in order to complete its IaaS management architecture (Figure 14.5):
· Network virtualization is incorporated into logical network topologies, and logical network perimeters are established using different firewalls and virtual networks.
· The VIM is positioned as the central tool for controlling the IaaS platform and equipping it with self-provisioning capabilities.
· Additional virtual server and cloud storage device mechanisms are implemented through the virtualization platform, while several virtual server images that provide base template configurations for virtual servers are created.
Figure 14.5 An overview of the DTGOV management architecture.
· Dynamic scaling is added using the VIM’s API through the use of automated scaling listeners.
· High-availability virtual server clusters are created using the resource replication, load balancer, failover system, and resource cluster mechanisms.
· A customized application that directly uses the SSO and IAM system mechanisms is built to enable interoperability between the remote administration system, network management tools, and VIM.
DTGOV uses a powerful commercial network management tool that is customized to store event information gathered by the VIM and SLA monitoring agents in an SLA measurements database. The management tool and database are used as part of a greater SLA management system. In order to enable billing processing, DTGOV expands a proprietary software tool that is based on a set of usage measurements from a database populated by pay-per-use monitors. The billing software is used as the base implementation for the billing management system mechanism.
Answer the following questions in a substantive manner:
1. Why did DTGOV add dynamic scaling to the infrastructure?
2. What functions do the SSO and IAM perform?
3. Why did DTGOV choose dynamic scaling?
DTGOV discovers that a number of additional mechanisms and technologies need to be
assembled in order to complete its IaaS management architecture (Figure 14.5):
·
Network virtualization is incorporated into logical network topologies, and logical
network perimeters are established using different firewalls and virtual networks.
·
The VIM is positioned as the central tool for controll
ing the IaaS platform and
equipping it with self
-
provisioning capabilities.
·
Additional virtual server and cloud storage device mechanisms are implemented
through the virtualization platform, while several virtual server images that provide
base template co
nfigurations for virtual servers are created.
DTGOV discovers that a number of additional mechanisms and technologies need to be
assembled in order to complete its IaaS management architecture (Figure 14.5):
Network virtualization is incorporated into logical network topologies, and logical
network perimeters are established using different firewalls and virtual networks.
The VIM is positioned as the central tool for controlling the IaaS platform and
equipping it with self-provisioning capabilities.
Additional virtual server and cloud storage device mechanisms are implemented
through the virtualization platform, while several virtual server images that provide
base template configurations for virtual servers are created.

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