Exam 1z0-062 topic 2 question 23 discussion

Why B? https://docs.oracle.com/database/121/CNCPT/memory.htm#CNCPT804 I think CFG

CFG B - wrong The fixed SGA is an internal housekeeping area. For example, the fixed SGA contains: * General information about the state of the database and the instance, which the background processes need to access * Information communicated between processes, such as information about locks

Answer is CEG

a) No. This is not the only algorithm b) No. It is not fixed. c) Yes. It can. d) No. This is not the only algorithm. e) Yes. This is the default buffer cache and block_size is relevant here. f) No. These buffers have their own size. g) Yes. New blocks may have not been written to disk yet. My answer: CEG

CDE the rigth ansewr is CDE consider A. not lru buffer cache uses touche count B. SGA maight or migth not be fixed C.Its buffers can contain data block images for blocks that have a corresponding image in a data file. D. Buffers containing block images may be selected for reuse based only on a touch count algorithm. reuse is base on touche count E.It can contain block images only for database blocks whose block size is equal to the buffer size. E is correct F.keep and recycle cache memory are not sub_allocated from memery allocated to the defulet buffer cache the are sub_allocated to buffer_cache(not the defolte one) sub_allocated of uffer_cache are db_cache_size is the default buffer cache db_keep_cache_size is for the KEEP buffer cache db_recycle_ cache_size is for the RECYCLE buffer cache db_nk_ cache_size

CFG is correct.

So which are correct??

CEG For F,https://docs.oracle.com/database/121/CNCPT/memory.htm#CNCPT1222 key words: Figure 14-7 Database Buffer Cache

ACF http://www.pafumi.net/Oracle_Architecture_and_Administration.html

ACG A correct