网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)

How can an operator list all its history of commands in one step?()

  • A、Run c -l 0?from the command line.Run ?c -l 0?from the command line.
  • B、Invoke SMIT for the shell environment.
  • C、Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt.
  • D、Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.

参考答案

更多 “How can an operator list all its history of commands in one step?()A、Run c -l 0?from the command line.Run ?c -l 0?from the command line.B、Invoke SMIT for the shell environment.C、Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt.D、Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.” 相关考题
考题 Its somewhat ambitious title was "The Book of Life", and it attempted to show how much an observant man might learn by an accurate and systematic examination of all that came in his way._______________________________________________________________________________

考题 Which of the following statements about object oriented database is not correct?A.Each object has a unique object identity in the system.B.Encapsulation and inheritance are two important features of object oriented databaseC.A subclass can inherit the attributes and methods of all its superclassesD.A superclass includes the attributes and methods of all its subclasses

考题 (b) ‘Strategic positioning’ is about the way that a company as a whole is placed in its environment and concerns its‘fit’ with the factors in its environment.With reference to the case as appropriate, explain how a code of ethics can be used as part of a company’soverall strategic positioning. (7 marks)

考题 How many orders are included in standard ship orders? Can you list some?

考题 An operator wants to move all files inside the directory /home/operator to the current directory. Which of the following commands will complete the task?() A. mv /home/operator .B. mv /home/operator/* .C. mv /home/operator ../..D. mv /home/operator/all ../home/operator

考题 A tow can override its tug as a result of ______.A.a mechanical breakdown on the tugB.adverse tidal current conditionsC.the tug reducing its speedD.All of the above

考题 Which statement about the gyrocompass is FALSE ________.A.Its accuracy remains the same at all latitudesB.It seeks the true meridianC.It can be used near the Earth's magnetic polesD.If an error exists,it is the same on all headings

考题 When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning ______.A.The safety of navigation or important meteorological warningsB.The safety of a vessel or a person is in jeopardyC.A vessel in need of immediate assistanceD.A coast station traffic list

考题 Which maintenance functions can a GMDSS Radio Operator perform ________.A.The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percentB.The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstaclesC.All levels of maintenance must be performed by a licensed GMDSS Radio MaintainerD.The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints

考题 The columbine flower,( )to nearly all of the United States,can be raised from seed in\almost any garden.A.native B.how native is C.how native is it D.is native

考题 A System p administrator found a process on the server that should be stopped.  Which of the following commands can be used to list all the signal actions defined for this process()A、psB、pstatC、lssigD、procsig

考题 Which two statements about subqueries are true? ()A、A single row subquery can retrieve data from only one table.B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.C、A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.D、A single row subquery can retrieve data from more than one table.E、A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.F、A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.

考题 An operator notices that a job on the system is causing poor performance. The job is a root process and the administrator has concluded it is not important and can be stopped. Shortly after stopping the process, it starts again. Which of the following commands will list repeating scheduled tasks?()A、at -lB、jobs -lC、sched -lD、crontab -l

考题 How many ARFCNs can an operator use if allocated 15 MHz uplink and 15 MHz downlink (minus one for guardband)? ()A、14 ARFCNsB、15 ARFCNsC、29 ARFCNsD、75 ARFCNsE、74 ARFCNs

考题 The operator needs to execute a long-running shell script. How can the script be executed so the operator does not have to wait until it is complete to access the command prompt?()A、./script.kshB、nohup ./script.kshC、run -b ./script.kshD、./script.ksh nohup.out

考题 An operator wants to move all files inside the directory /home/operator to the current directory. Which of the following commands will complete the task?()A、mv /home/operator .B、mv /home/operator/* .C、mv /home/operator ../..D、mv /home/operator/all ../home/operator

考题 How can an operator temporarily gain access to the command line while in a smit session, without losing the current smit session?()A、F2 keyB、F6 keyC、F8 keyD、F9 key

考题 Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?()A、:r/^#//gB、:1,$ s/^#//gC、:sed s/^#//gD、:sub s/^#//g

考题 Which statement is true regarding the COALESCE function?()A、It can have a maximum of five expressions in a list B、It returns the highest NOT NULL value in the list for all rows C、It requires that all expressions in the list must be of the same data type D、It requires that at least one of the expressions in the list must have a NOT NULL value

考题 Which statement is true regarding subqueries?()A、The LIKE operator cannot be used with single-row subqueries B、The NOT IN operator is equivalent to IS NULL with single-row subqueries C、=ANY and =ALL operators have the same functionality in multiple-row subqueries D、The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries 

考题 单选题An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?()A lslp -aB qchk -AC enq -s ALLD lpstat -p ALL

考题 单选题The operator needs to execute a long-running shell script. How can the script be executed so the operator does not have to wait until it is complete to access the command prompt?()A ./script.kshB nohup ./script.kshC run -b ./script.kshD ./script.ksh nohup.out

考题 单选题Which statement is true regarding subqueries?()A The LIKE operator cannot be used with single-row subqueries B The NOT IN operator is equivalent to IS NULL with single-row subqueries C =ANY and =ALL operators have the same functionality in multiple-row subqueries D The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries 

考题 多选题Which two statements about subqueries are true? ()AA single row subquery can retrieve data from only one table.BA SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.CA SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.DA single row subquery can retrieve data from more than one table.EA single row subquery cannot be used in a condition where the LIKE operator is used for comparison.FA multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.

考题 单选题An administrator is supporting an AIX 6.1 LPAR remotely and needs a tape operator to plug a cable into an Ethernet adapter. The tape operator does not have POWER6 595 knowledge.  What can the administrator do to assist the tape operator to locate the correct adapter?()A Advise the tape operator to review the hardware service guide.B Use the diag command to set the Ethernet adapter slot LED to flash.C Advise the tape operator to check the WWN stickers of all Ethernet adapter in the I/O drawers.D Create a login account for tape operator on the HMC and advise the tape operator to locate the adapter using the GUI step by step.

考题 单选题Which statement is true regarding the COALESCE function?()A It can have a maximum of five expressions in a list B It returns the highest NOT NULL value in the list for all rows C It requires that all expressions in the list must be of the same data type D It requires that at least one of the expressions in the list must have a NOT NULL value

考题 单选题A system administrator found a process on the server that should be stopped. What command can be used to list all the signal actions defined for this process?()A psB pstatC portmapD procsig