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NEW QUESTION: 1
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
Your network contains an Active Directory domain named contoso.com. The domain contains a DNS server named Server1. All client computers run Windows 10.
On Server1, you have the following zone configuration.
You have the following subnets defined on Server1.
You need to prevent Server1 from resolving queries from DNS clients located on Subnet4. Server1 must resolve queries from all other DNS clients.
Solution: From the Security Setting of each zone on Server1, you modify the permissions.
Does this meet the goal?
A. Yes
B. No
Answer: B
NEW QUESTION: 2
Which two statements about the provisioning of Cisco VM-FEX DirectPath I/O mode are true? (Choose two.)
A. The VT-D feature on the ESX host server must be disabled before you can enable VMDirectPath.
B. VMDirectPath mode prevents the use of VMware vMotion.
C. Enabling high performance turns on VMDirectPath mode.
D. VM-FEX standard mode is the same as VM-FEX high-performance mode.
E. To use Cisco VM-FEX DirectPath I/O mode, a virtual machine must have a dynamic vNIC and two static vNICs on the VIC adapter.
Answer: C,E
Explanation:
Reference:
http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/unifiedcomputing/vm_fex_best_prac
NEW QUESTION: 3
You are designing a data processing solution that will run as a Spark job on an HDInsight cluster. The solution will be used to provide near real-time information about online ordering for a retailer.
The solution must include a page on the company intranet that displays summary information.
The summary information page must meet the following requirements:
* Display a summary of sales to date grouped by product categories, price range, and review scope.
* Display sales summary information including total sales, sales as compared to one day ago and sales as compared to one year ago.
* Reflect information for new orders as quickly as possible.
You need to recommend a design for the solution.
What should you recommend? To answer, select the appropriate configuration in the answer area.
Answer:
Explanation:
Explanation:
Box 1: DataFrame
DataFrames
Best choice in most situations.
Provides query optimization through Catalyst.
Whole-stage code generation.
Direct memory access.
Low garbage collection (GC) overhead.
Not as developer-friendly as DataSets, as there are no compile-time checks or domain object programming.
Box 2: parquet
The best format for performance is parquet with snappy compression, which is the default in Spark 2.x. Parquet stores data in columnar format, and is highly optimized in Spark.
Incorrect Answers:
DataSets
Good in complex ETL pipelines where the performance impact is acceptable.
Not good in aggregations where the performance impact can be considerable.
RDDs
You do not need to use RDDs, unless you need to build a new custom RDD.
No query optimization through Catalyst.
No whole-stage code generation.
High GC overhead.
References:
https://docs.microsoft.com/en-us/azure/hdinsight/spark/apache-spark-perf