You need to identify the number of servers that will be used specifically for operations master roles. How many servers should you recommend?()A、5B、11C、14D、17E、20

You need to identify the number of servers that will be used specifically for operations master roles. How many servers should you recommend?()

  • A、5
  • B、11
  • C、14
  • D、17
  • E、20

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单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?()AALTER TABLE students ADD PRIMARY KEY _ id;BALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);CALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;DALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);EALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);

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多选题You are connected to Recovery Manager (RMAN) without a recovery catalog. There is no copy of the control file available. You want to restore the control file from an autobackup. To retrieve the autobackup,you need the database ID (DBID).  In which two sources would you find the DBID? ()Athe trace fileBthe alert log fileCan RMAN session log fileDthe server parameter fileEthe formatted name of a control file autobackup

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多选题Which two statements are true when configuring a domain-id?()AThe default OSPF domain-id is 127.0.0.1.BIt most cases, a domain-id must be configured.CIt most cases, you do not need to configure a domain-id.DFor a layer 3 VPN connecting multiple OSPF domains, configuring a domain-id can help control LSA translations.

单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?()AALTER TABLE students ADD PRIMARY KEY student_id;BALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);CALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;DALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);EALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);