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NEW QUESTION: 1
DRAG DROP
Case Study
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.
To start the case study
To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.
Overview
Background
Alpine Skihouse designs and manufactures skis and ski accessories. The corporate headquarters for the company is located in London. The company has a design office in Rome and sales offices in Paris, Los Angeles, and Boston. The design team director works in the Rome office.
The company plans to implement Skype for Business Server 2015 to address their unified communications needs. The company currently has traditional PBX implementations in each office location and uses a dial- in conferencing system that is hosted on their internal PBX.
The number of users in each office is shown in the following table:
Remote connectivity to all corporate resources and services is provided by SSL virtual private network (VPN) only. The current VPN solution tunnels all traffic to the office Internet facing services cannot be reached directly from users' laptops when they are traveling.
Problem statements
During the requirements gathering process for the Skype for Business deployment project, users
reported the following issues:
Users based in the United States report that they experience poor audio and video quality when they
conduct meetings with users that are not located in the United States.
Users based in the United States report that they experience poor audio and video quality when they
conduct meetings and calls while they remotely connected to the office.
The design team director would like customers to be greeted in the Italian language when they use dial-
in conferencing to join meetings.
The sales team director organizes daily alignment meetings with local sales teams. He reports that
there are issues with the quality of the audio and video.
Proposed solution
London
The following table shows the proposed London Skype for Business Server 2015 server architecture and IP addresses:
The following table shows the proposed Rome Skype for Business Server 2015 server architecture and IP addresses:
Los Angeles
The following table shows the proposed Los Angeles Skype for Business Server 2015 server architecture and IP address:
Requirements
Business requirements
The company has identified the following business requirements:
Users must be able to access all Skype for Business services when they work remotely.
The solution must support meetings with up to 10,000 users.
The solution must be highly available, and must withstand the loss of a single component at any point
in time with as little interruptions of service as possible.
The language used by Skype for Business services must be localized wherever possible.
The leadership team in the Americas regions hosts an All Hands meeting for all employees four times
per year. All employees are requested to join this meeting. You must not install any additional servers to support this requirement.
Technical requirements
The company has identified the following technical requirements:
The SQL team has completed an upgrade of the entire SQL Server to the latest version. They require
every SQL Server to use a SQL AlwaysOn Availability Group as the high availability (HA) option.
There is no data center within the Bostonsite.
You must use the secondary data center in London to minimize the impact to users in the event of a
single-site disaster.
Media traffic must only be encrypted once.
You must use the Skype for Business Management ShellInvoke-CsComputerFailOverandInvoke-
CsComputerFailBackcmdlets to perform maintenance actions during daily operations.
You must implement Domain Name System (DNS) load balancing wherever possible.
You need to configure the Domain Name System (DNS) records.
What should you do? To answer, drag the appropriate IP address or IP address range to the correct DNS record. Each IP address may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Select and Place:
Answer:
Explanation:
NEW QUESTION: 2
You have a DNS server named Server1.
Server1 has a primary zone named contoso.com.
Zone Aging/Scavenging is configured for the contoso.com zone.
One month ago, an administrator removed a server named Server2 from the network.
You discover that a static resource record for Server2 is present in contoso.com. Resource records for decommissioned client computers are removed automatically from contoso.com.
You need to ensure that the static resource records for all of the servers are removed automatically from contoso.com.
What should you modify?
A. The Expires after value of contoso.com
B. The Record time stamp value of the static resource records
C. The time-to-live (TTL) value of the static resource records
D. The Security settings of the static resource records
Answer: B
Explanation:
Reset and permit them to use a current (non-zero) time stamp value. This enables these records to become aged and scavenged.
You can use this procedure to change how a specific resource record is scavenged.
A stale record is a record where both the No-Refresh Interval and Refresh Interval have passed without the time stamp updating.
DNS->View->Advanced
Depending on the how the resource record was originally added to the zone, do one of the following:
If the record was added dynamically using dynamic update, clear the Delete this record when it
becomes stale check box to prevent its aging or potential removal during the scavenging process. If dynamic updates to this record continue to occur, the Domain Name System (DNS) server will always reset this check box so that the dynamically updated record can be deleted.
If you added the record statically, select the Delete this record when it becomes stale check box to
permit its aging or potential removal during the scavenging process.
References:
http: //technet. microsoft. com/en-us/library/cc759204%28v=ws. 10%29. aspx
http: //technet. microsoft. com/en-us/library/cc759204%28v=ws. 10%29. aspx Typically, stale DNS records occur when a computer is permanently removed from the network.
Mobile users who abnormally disconnect from the network can also cause stale DNS records. To help manage stale records, Windows adds a time stamp to dynamically added resource records in primary zones where aging and scavenging are enabled. Manually added records are time stamped with a value of 0, and they are automatically excluded from the aging and scavenging process.
To enable aging and scavenging, you must do the following:
Resource records must be either dynamically added to zones or manually modified to be used in
aging and scavenging operations.
Scavenging and aging must be enabled both at the DNS server and on the zone.
Scavenging is disabled by default.
DNS scavenging depends on the following two settings:
No-refresh interval: The time between the most recent refresh of a record time stamp and the
moment when the time stamp can be refreshed again. When scavenging is enabled, this is set to 7 days by default.
Refresh interval: The time between the earliest moment when a record time stamp can be
refreshed and the earliest moment when the record can be scavenged. The refresh interval must be longer than the maximum record refresh period. When scavenging is enabled, this is set to 7 days by default.
A DNS record becomes eligible for scavenging after both the no-refresh and refresh intervals have elapsed. If the default values are used, this is a total of 14 days.
References:
http: //technet. microsoft. com/en-us/library/cc759204%28v=ws. 10%29. aspx
http: //technet. microsoft. com/en-us/library/cc759204%28v=ws. 10%29. aspx
http: //technet. microsoft. com/en-us/library/cc771570. aspx
http: //technet. microsoft. com/en-us/library/cc771677. aspx
http: //technet. microsoft. com/en-us/library/cc758321(v=ws. 10). aspx
NEW QUESTION: 3
최근 회사에서 웹 서버가 콘텐츠를 제공하지 못하게 하는 DDoS 공격이 발생했습니다. 웹 사이트는 정적이며 사용자가 다운로드하는 HTML, CSS 및 PDF 파일 만 호스팅합니다.
이미지에 표시된 아키텍처를 기반으로 진행중인 운영 오버 헤드를 최소화하면서 향후 공격으로부터 사이트를 보호하는 가장 좋은 방법은 무엇입니까?
A. EC2 인스턴스 앞에서 Application Load Balancer를 시작하십시오. Application Load Balancer 앞에서 Amazon CloudFront 배포를 생성하십시오.
B. 모든 파일을 Amazon S3 버킷으로 이동합니다. 버킷 앞에 CloudFront 배포를 생성하고 웹 서버를 종료하십시오.
C. 새 서브넷에서 두 번째 Amazon EC2 인스턴스를 시작하십시오. 두 인스턴스 앞에서 Application Load Balancer를 시작하십시오.
D. 모든 파일을 Amazon S3 버킷으로 옮깁니다. 웹 서버가 S3 버킷에서 파일을 제공하도록 하십시오.
Answer: B
Explanation:
https://docs.aws.amazon.com/AmazonS3/latest/dev/WebsiteHosting.html
NEW QUESTION: 4
Which of the following are z 114 virtualization benefits?
A. z/VM is a proven virtualization tool
B. Server Shut down with Live Partition Mobility
C. vmWare offers unlimited partitioning
D. Server shut down with Live Application Mobility
Answer: A
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