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名词解释题gene pool

题目
名词解释题
gene pool
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相似问题和答案

第1题:

TheAutomaticSharedMemoryManagementfeatureisenabledforthePRODdatabase.Currently,alotofinsertactivityistakingplaceinthedatabase,andthememorystructuresareallocatedaccordingtothedatabaseworkload.Astheworkloadreduces,youdecidetoperformbatchjobsinthedatabase.WhichofthefollowinginitializationparametersareNOTautomaticallyresizedaccordingtothenewworkloadandcontinuetoremainunchanged?()

A.LOG_BUFFER

B.DB_CACHE_SIZE

C.JAVA_POOL_SIZE

D.LARGE_POOL_SIZE

E.SHARED_POOL_SIZE

F.STREAMS_POOL_SIZE


参考答案:A, F

第2题:

管理员在交换机设置某条指令的时候,出现下述错误,
Error:The network section should be within the subnet of the pool.
则最可能执行的指令是( )

A.[Huawei-ip-pool-x]network 192.168.1.1 mask 24
[Huawei-ip-pool-x]gateway-list 192.168.2.2
B.[Huawei-ip-pool-x]network 192.168.1.1 mask 24
[Huawei-ip-pool-x]dns-list 192.168.2.2
C.[Huawei-ip-pool-x]network 192.168.1.1 mask 24
[Huawei-ip-pool-x]lease day 1000
D.[Huawei-ip-pool-x]network 192.168.1.1 mask 24
[Huawei-ip-pool-x]next-server 192.168.2.2

答案:A
解析:
此题主要考查对华为交换机的基础配置命令,显然错误提示为输入的网络没有在指定的地址池内。可以看到四个选项中,必须要求网关与地址池的地址在同一个子网,否则就会报错。因此答案是A。

第3题:

YouareconfiguringthePRODdatabasetouseaninternaltuningalgorithmtomonitortheperformanceoftheworkload.Toachievethisconfiguration,youspecifythefollowingparametersettingsintheSPFILE:SGA_TARGET=512MSHARED_POOL_SIZE=256MWhichtwostatementsaretruewhenmodifyingtheSHARED_POOL_SIZEinitializationparameterintheSPFILE?()

A.ModifyingtheSHARED_POOL_SIZEinitializationparametercannotbeaccomplishediftheSGA_TARGETinitializationparameterissettoanon-zerovalue.

B.ModifyingthevalueoftheSHARED_POOL_SIZEinitializationparametertozeroisnotallowediftheSGA_TARGETinitializationparameterissettoanonzerovalue.

C.IncreasingthevalueoftheSHARED_POOL_SIZEinitializationparameterdoesnotincreasethesharedpoolcomponentsize.Itsetsthelowerlimitforthesizeofthiscomponent.

D.DecreasingthevalueoftheSHARED_POOL_SIZEinitializationparameterdoesnotreducethesizeofthesharedpoolcomponentimmediately.Itsetsthelowerlimitforthesizeofthiscomponent.

E.IncreasingthevalueoftheSHARED_POOL_SIZEinitializationparameterimmediatelyincreasesthesharedpoolcomponenttothedesiredsizebyreallocatingtheadditionalmemoryfromtheauto-tunedmemorycomponents.

F.DecreasingthevalueoftheSHARED_POOL_SIZEinitializationparameterimmediatelyshrinksthesharedpoolcomponenttothedesiredsizewhilereallocatingthereleasedmemorytothememorycomponentsthatarenotauto-tuned.


参考答案:D, E

第4题:

何谓断裂基因(split gene)?何谓重叠基因(overlapping gene)?它们在生物进化与适应上有何意义?


正确答案:重叠基因是一段能够携带多种不同蛋白质信息的DNA片段。原核生物多含重叠基因,可以保持其基因组结构的经济性,在一定的空间范围内尽可能多的表现生命功能。
断裂基因是在DNA分子的结构基因内既含有能转录翻译的片段,也含有不转录翻译的片段。真核生物多含断裂基因,可同过对非编码区的选择性剪接产生多样性的基因表达产物以完成复杂多变的生命功能。

第5题:

gene pool


正确答案: 基因库。是指一个物种所含有的总的遗传信息。基因库的数量和质量是种质资源研究不可缺少的内容。

第6题:

UsingOracleEnterpriseManagertosetSGApoolvaluesmanually,forwhichofthefollowingpoolsdoesOracleEMofferadvicetosetthevalueappropriately?()

A.DB_CACHE_SIZE

B.SHARED_POOL_SIZE

C.LARGE_POOL_SIZE

D.JAVA_POOL_SIZE

E.SGA_MAX_SIZE

F.SORT_AREA_SIZE


参考答案:A, B

第7题:

管理员在Router上进行了如下配置,完成之后,在该路由器的G1/0/0接口下连接了一台交换机,则关于此主机的IP地址描述正确的是( )。[Router]ip pool pool1[Router-ip-pool-pool1]network 10.10.10.0 mask 255.255.255.0[Router-ip-pool-pool1]gateway-list 10.10.10.1[Router-ip-pool-pool1]quit[Router]ip pool pool2[Router-ip-pool-pool2]network 10.20.20.0 mask 255.255.255.0[Router-ip-pool-pool2]gateway-list 10.20.20.1[Router-ip-pool-pool2]quit[Router]interface GigabitEthernet 1/0/0[Router-GigabitEthernet 1/0/0]ip address 10.10.10.1.24[Router-GigabitEthernet 1/0/0]dhcp select global

A.获取的IP地址属于10.10.10.0/24网络
B.获取的IP地址属于10.20.20.0/24网络
C.主机获取不到IP地址
D.获取的IP地址可能属于10.10.10.0/24网络,也可能属于10.20.20.0/24网络

答案:A
解析:
华为DHCP地址配置

第8题:

YousetthevalueoftheSGA_TARGETinitializationparameterto1GtoenableOracletoautomaticallyresizemostofthememorycomponentsaccordingtothecurrentworkloadinthedatabase.Youissuethefollowingstatement:SQL>SELECTname,value,isdefault2FROMv$parameter3WHEREnameLIKE’%size%’;TheoutputofthisstatementdisplaysthattheDB_CACHE_SIZE,SHARED_POOL_SIZE,LARGE_POOL_SIZE,andJAVA_POOL_SIZEinitializationparameterscontainazerovalue.Whatdoesthisimply?()

A.TheSGA_TARGETinitializationparametercannotbesettoavaluelessthan1G

B.TheSGA_TARGETinitializationparametercannotbesettoavaluegreaterthan1G

C.TheMemoryAdvisoroftheOracleEnterpriseManager10gcannotbeusedtoobtainadviceontheimportantmemorycomponentsoftheSGA

D.ThevaluesoftheDB_CACHE_SIZE,SHARED_POOL_SIZE,LARGE_POOL_SIZE,andJAVA_POOL_SIZEinitializationparameterscannotbesetmanually.

E.NominimumlimitsareimposedontheDB_CACHE_SIZE,SHARED_POOL_SIZE,LARGE_POOL_SIZE,andJAVA_POOL_SIZEinitializationparameters.

F.TheAutomaticSharedMemoryManagementfeaturecannotbedisabledunlessyouspecifyvaluesfortheDB_CACHE_SIZE,SHARED_POOL_SIZE,LARGE_POOL_SIZE,andJAVA_POOL_SIZEinitializationparametersintheinitializationparameterfile.


参考答案:C, E

第9题:

次级基因库(gene pool2)


正确答案: 资源间的基因能转移。存在生殖隔离,杂交不实或杂种不育,须借助特殊育种手段实现基因转移。(种间或近缘野生种或近缘属)

第10题:

HLA复合体(HLA gene complex)


正确答案:是人主要组织相容性复合体,存在于人第6号染色体短臂,编码产物称为HLA抗原。

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