You have two EBGP peers connected via two parallel serial lines. What should you do to be able to load-balance between two EBGP speakers over the parallel serial lines in both directions？ （）
A. nothing，BGP automatically load-balances the traffic between different autonomous systems on all available links
B. peer between the eBGP speaker’s loopbacks， configuring eBGP multihop as required， and use an IGP to load-share between the two equal-cost paths between the loopback addresses
C. configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the EBGP peer loopback address；it is also necessary to use the next-hop-self command
D. use the ebgp-load-balance command on the neighbor statement on both sides
E. configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the peer loopback address；it is also necessary to use the ebgp-multihop and next-hop-self command
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You configured the Flash Recovery Area （FRA） for your database. The database instance is running inARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which twofiles are removed automatically if the space is required in the FRA as per the retention policy（）
A. Flashback log files
Backups that have become obsolete
C. User managed backups of the data files and control files
D. Archived redo log files that have multiple copies in a different archive location and not backed u
以下会导致减顶回流罐污水带油的是（）。
A. 回流罐温度过高
B. 回流罐压力过高
C. 回流罐界位控制不好
D. 塔顶污水泵故障
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