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NEW QUESTION: 1
Your________networking stack must be set up properly to accommodate VMotion.
A. VMkernel
B. Port Group
C. Service Console
D. vSwitch
Answer: A
Explanation:
Your VMkernel networking stack must be set up properly to accommodate VMotion.

NEW QUESTION: 2
You have several real-time applications that constantly update data in a database. The applications run
more than 400 transactions per second that insert and update new metrics from sensors.
A new web dashboard is released to present the data from the sensors. Engineers report that the
applications take longer than expected to commit updates.
You need to change the dashboard queries to improve concurrency and to support reading uncommitted
data.
What should you do?
A. Execute the DBCC UPDATEUSAGEstatement.
B. Set SET ALLOW_SNAPSHOT_ISOLATIONto ON.
C. Execute the ALTER TABLE T1 SET (LOCK_ESCALATION = AUTO);statement.
D. Use the NOLOCKoption.
E. Use the OUTPUTparameters.
F. Set SET XACT_ABORTto ON.
G. Use a table-valued parameter.
H. Use the max worker threadsoption.
Answer: D
Explanation:
Explanation/Reference:
Explanation:
The NOLOCK hint allows SQL to read data from tables by ignoring any locks and therefore not being
blocked by other processes.
This can improve query performance, but also introduces the possibility of dirty reads.
Incorrect Answers:
F: When SET XACT_ABORT is ON, if a Transact-SQL statement raises a run-time error, the entire
transaction is terminated and rolled back.
G: DISABLE, not AUTO, would be better.
There are two more lock escalation modes: AUTO and DISABLE.
The AUTO mode enables lock escalation for partitioned tables only for the locked partition. For non-
partitioned tables it works like TABLE.
The DISABLE mode removes the lock escalation capability for the table and that is important when
concurrency issues are more important than memory needs for specific tables.
Note: SQL Server's locking mechanism uses memory resources to maintain locks. In situations where the
number of row or page locks increases to a level that decreases the server's memory resources to a
minimal level, SQL Server's locking strategy converts these locks to entire table locks, thus freeing
memory held by the many single row or page locks to one table lock. This process is called lock
escalation, which frees memory, but reduces table concurrency.
References: https://www.mssqltips.com/sqlservertip/2470/understanding-the-sql-server-nolock-hint/

NEW QUESTION: 3
Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)
A. Link-local addresses start with FE00:/12.
B. If a global address is assigned to an interface, then that is the only allowable address for the interface.
C. There is only one loopback address and it is ::1.
D. Global addresses start with 2000::/3.
E. Link-local addresses start with FF00::/10.
Answer: C,D
Explanation:
Explanation