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問題1
GlobalCorp is a company that makes state of the art aircraft for commercial and government use. Recently GlobalCorp has been working on the next generation of low orbit space vehicles, again for both commercial and governmental markets.
GlobalCorp has corporate headquarters in Testbed, Nevada, USA. Testbed is a small town, with a population of less than 50,000 people. GlobalCorp is the largest company in town, where most families have at least one family member working there.
The corporate office in Testbed has 4,000 total employees, on a 40-acre campus environment. The largest buildings are the manufacturing plants, which are right next to the Research and Development labs. The manufacturing plants employee approximately 1,000 people and the R&D labs employ 500 people. There is one executive building, where approximately 500 people work. The rest of the employees work in Marketing, Accounting, Press and Investor Relations, and so on. The entire complex has a vast underground complex of tunnels that connect each building.
All critical functions are run from the Testbed office, with remote offices around the world. The remote offices are involved in marketing and sales of GlobalCorp products. These offices also perform maintenance on the GlobalCorp aircraft and will occasionally perform R&D and on-site manufacturing.
There are 5 remote offices, located in: New York, California, Japan, India, and England. Each of the remote offices has a dedicated T3 line to the GlobalCorp HQ, and all network traffic is routed through the Testbed office the remote offices do not have direct Internet connections.
You had been working for two years in the New York office, and have been interviewing for the lead security architect position in Testbed. The lead security architect reports directly to the Chief Security Officer (CSO), who calls you to let you know that you got the job. You are to report to Testbed in one month, just in time for the annual meeting, and in the meantime you review the overview of the GlobalCorp network.

Your first day in GlobalCorp Testbed, you get your office setup, move your things in place, and about the time you turn on your laptop, there is a knock on your door. It is Blue, the Chief Security Officer, who informs you that there is a meeting that you need to attend in a half an hour.
With your laptop in hand, you come to the meeting, and are introduced to everyone. Blue begins the meeting with a discussion on the current state of security in GlobalCorp.
"For several years now, we have constantly been spending more and more money on our network defense, and I feel confident that we are currently well defended." Blue, puts a picture on the wall projecting the image of the network, and then continues, "We have firewalls at each critical point, we have separate Internet access for our public systems, and all traffic is routed through our controlled access points. So, with all this, you might be wondering why I have concern."
At this point a few people seem to nod in agreement. For years, GlobalCorp has been at the forefront of perimeter defense and security. Most in the meeting are not aware that there is much else that could be done.
Blue continues, "Some of you know this, for the rest it is new news: MassiveCorp is moving their offices to the town right next to us here. Now, as you all know, MassiveCorp has been trying to build their orbital systems up to our standards for years and have never been able to do so. So, from a security point of view, I am concerned."
Blue responds, "I suggest trust. Not with MassiveCorp, but in our own systems. We must build trusted networks. We must migrate our network from one that is well-defended to one that is well-defended and one that allows us to trust all the network traffic."
The meeting continues for some time, with Blue leading the discussion on a whole new set of technologies currently not used in the network. After some time, it is agreed upon that GlobalCorp will migrate to a trusted networking environment.
The following week, Blue informs you that you will be working directly together on the development of the planning and design of the trusted network. The network is going to run a full PKI, with all clients and servers in the network using digital certificates. You are grateful that in the past two years, Blue has had all the systems changed to be running only Windows 2000, both server and professional systems, running Active Directory. You think the consistent platform will make the PKI roll out easier.
The entire GlobalCorp network is running Active Directory, with the domain structure as in the following list:
Testbed.globalcorp.org
Newyork.globalcorp.org
California.globalcorp.org
Japan.globalcorp.org
India.globalcorp.org
England.globalcorp.org
Although you will be working in the Testbed office, the plan you develop will need to include the entire GlobalCorp organization. Based on this information, select the solution that describes the best plan for the new trusted network of GlobalCorp:}

正確答案: D
問題2
By now, you are feeling confident that the security of the MegaCorp network is getting under control. You are aware that there are still several critical areas that you must deal with, and today you are addressing one of those areas. You have been able to take care of the router, firewall, security policy, and intrusion detection, now you are concerned with some of the hosts in the network.
Since the organization is not very large, you are the only person working in the IT end of the company. It will be up to you to directly work on the systems throughout the network. You make a quick chart of the systems you know should be in the MegaCorp network:
Server0001, 10.10.20.101, Windows 2000 Server
Server0010, 10.10.20.102, Windows 2000 Server
Server0011, 10.10.20.103, Windows 2000 Server
Server0100, 10.10.20.104, Linux (Red Hat 8.0)
User systems, 10.10.100.100~10.10.100.200, Windows 2000 Professional
The addressing that you recommended months ago is in place, and it follows a distinct logical pattern, you are hoping that no new systems are hidden in the network somewhere.
In the company, you have been granted domain administrator rights, and no other user is authorized to have administrator, root, supervisor, or otherwise privileged level of access. All the Windows systems are to belong to one windows domain called SCNA.edu. Users are no longer allowed to install unauthorized applications, and are all to use the file servers for storage. Although they have the ability to do so, users are not supposed to store any work data on their local systems.
The servers are located in a server cabinet that is inside your office, so you decide to start working there. Using your knowledge of MegaCorp select the best solution for hardening the MegaCorp operating systems:}

正確答案: E
問題3
You had been taking a short vacation, and when you come into work on Monday morning, Blue is already at your door, waiting to talk to you.
"We're got a problem," Blue says, "It seems that the password used by our Vice President of Engineering has been compromised." Over the weekend, we found this account had logged into the network 25 times. The Vice President was not even in the office over the weekend."
"Did we get the source of the compromise yet?"
"No, but it won't surprise me if it is our new neighbors at MassiveCorp. I need to you to come up with a realistic plan and bring it to me tomorrow afternoon. This problem must be resolved, and like everything else we do not have unlimited funds so keep that in mind."
Based on this information, choose the best solution to the password local authentication problem in the Executive building.}

正確答案: C
問題4
The network has been receiving quite a lot of inbound traffic, and although you have been given instructions to keep the network open, you want to know what is going on. You have decided to implement an Intrusion Detection System. You bring this up at the next meeting.
"After looking at our current network security, and the network traffic we are dealing with, I recommend that we implement an Intrusion Detection System," you begin.
"We don't have any more budget for security equipment, it will have to wait until next year." This is the reply from the CEO that you were anticipating.
"I realize that the budget is tight, but this is an important part of setting up security." You continue, "If I cannot properly identify all the network traffic, and have a system in place to respond to it, we might not know about an incident until after our information is found for sale on the open market." As expected, your last comment got the group thinking.
"What about false alarms?" asks the VP of sales, "I hear those things are always going off, and just end up wasting everyone" time."
"Tha's a fair concern, but it is my concern. When we implement the system, I will fine tune it and adjust it until the alarms it generates are appropriate, and are generated when there is legitimately something to be concerned about. We are concerned with traffic that would indicate an attack; only then will the system send me an alert."
For a few minutes there was talk back and forth in the room, and then the CEO responds again to your inquiry, "I agree that this type of thing could be helpful. But, we simply don have any more budget for it. Since it is a good idea, go ahead and find a way to implement this, but don't spend any money on it."
With this information, and your knowledge of MegaCorp, choose the answer that will provide the best solution for the IDS needs of MegaCorp:}

正確答案: D

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