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You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed.<br /> Identify three possible reasons for this.（）

A、Missing or stale histogram statistics

B、Undersized shared pool

C、High clustering factor for the indexes

D、High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter

E、Oversized buffer cache

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更多“ You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed.<br /> Identify three possible reasons for this.（）”相关的问题
第1题
[多选题] TD-LTE系统低优先级邻区小区重选算法包括（）。

A、Srx，n>THx，high&nbsp;&nbsp;B、Rn>Rs&nbsp;&nbsp;C、Srx，n>THx，low&nbsp;&nbsp;D、Srx，sng，low br="">E.Srx，sng，high< body="">ng，high<>ng，low>&nbsp;&nbsp;

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第2题
[单选题] You notice that during peak hours, some firewall enforcers contain a high number of auth table entries. As you investigate the issue, you discover that all users are getting auth table mappings to all firewalls, which is not acceptable. What should you do on the Junos Pulse Access Control Service to resolve this problem?（）

A、Delete the default auth table mapping policy&nbsp;&nbsp;B、Create auth table mapping policies that route users to specific resources&nbsp;&nbsp;C、Create Resource Access policies that permit access to specific resources&nbsp;&nbsp;D、Create Source Interface policies that route users to specific resources&nbsp;&nbsp;

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第3题
[] You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference. Which method or feature should you use?（） You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference. Which method or feature should you use?（）

A、A. Compare Period ADDM report&nbsp;&nbsp;B、B. AWR Compare Period report&nbsp;&nbsp;C、C. Active Session History (ASH) report&nbsp;&nbsp;D、D. Taking a new snapshot and comparing it with a preserved snapshot&nbsp;&nbsp;

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第4题
[单选题] You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）

A、OSPF authentication errors between some of the routers&nbsp;&nbsp;B、Two routers have the same OSPF router ID&nbsp;&nbsp;C、Issues with mistuned OSPF timers&nbsp;&nbsp;D、OSPF LSA pacing issues between some of the routers&nbsp;&nbsp;E、OSPF neighbor adjacency problems between some of the routers&nbsp;&nbsp;

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第5题
[单选题] MV SKYCLIPPER RE OUR TELCONV YDAY N PREVEIOUS TLX DD 24 JUL HV SPKN TO OWNER N UR RECFM TO Z FLWG NORDER ENSURE VSLS FXTRE TO U. Following this passage will be（）.

A、the Fixture Note&nbsp;&nbsp;B、the Declaration of DWTC&nbsp;&nbsp;C、the Notice of Readiness&nbsp;&nbsp;D、the Notice of Demurrage&nbsp;&nbsp;

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第6题
[单选题] You run a Windows Defender scan on your computer. You notice a valid program listed in Quarantined Items. You need to use this program on your computer. What should you do?（）

A、A&nbsp;&nbsp;B、B&nbsp;&nbsp;C、C&nbsp;&nbsp;D、D&nbsp;&nbsp;

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第7题
[] Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？（） Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？（）

A、A. Stop and restart the DNS Server service on Server1.&nbsp;&nbsp;B、B. Enable DNS scavenging on the na.contoso.com zone.&nbsp;&nbsp;C、C. Run the dnscmd Server1 /AgeAllRecords command on Server1.&nbsp;&nbsp;D、D. Run the dnscmd Server1 /StartScavenging command on Server1.&nbsp;&nbsp;

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第8题
[单选题] When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates （）.

A、good insulation&nbsp;&nbsp;B、bad insulation&nbsp;&nbsp;C、high insulation power factor&nbsp;&nbsp;D、a high slot discharge factor&nbsp;&nbsp;

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第9题
[单选题] In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments. On further investigation, you find that buffer busy waits is caused by contention on data blocks. Which option would you consider first to decrease the wait event immediately?（）

A、Decreasing PCTUSED&nbsp;&nbsp;B、Decreasing PCTFREE&nbsp;&nbsp;C、Increasing the number of DBWN process&nbsp;&nbsp;D、Using Automatic Segment Space Management (ASSM)&nbsp;&nbsp;E、Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation&nbsp;&nbsp;

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