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单选题
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.
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更多 “单选题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
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What is the order of preference for these commands when all of them are applied to one neighbor in theBGP inbound filter direction？（）A、prefix-list， route-map， filter-list， distribute listB、route-map， filter-list， prefix-list， distribute-listC、route-map， distribute-list， prefix-list， filter-listD、filter-list， prefix list， route-map， distribute listE、distribute list， prefix-list， route-map， fitter list
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Which three statements about subqueries are true?（）A、A single row subquery can retrieve only one column and one row.B、A single row subquery can retrieve only one row but many columns.C、A multiple row subquery can retrieve multiple rows and multiple columns.D、A multiple row subquery can be compared by using the “” operator.E、A single row subquery can use the IN operator.F、A multiple row subquery can use the “=” operator.
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考题
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.
考题
Which of the following commands will list available paging space on a system?（）A、lspsB、lsps -aC、lsps -pgD、lsps ALL
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 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 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 an INSERT statement to insert multiple rows at a time.
考题
单选题What is the order of preference for these commands when all of them are applied to one neighbor in theBGP inbound filter direction？（）A
prefix-list， route-map， filter-list， distribute listB
route-map， filter-list， prefix-list， distribute-listC
route-map， distribute-list， prefix-list， filter-listD
filter-list， prefix list， route-map， distribute listE
distribute list， prefix-list， route-map， fitter list
考题
单选题We can infer that one virtue of a diary is its ability to ______.A
inject humility at times of great self-confidenceB
provide a fascinating maze of wordsC
record all that happens to the writerD
record the writer’s satisfaction with life
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How would you characterize the source and type in a denial of service attack on a router？（）A
By perfornubg a show ip interface to see the type and source of the attack based upon the access-listmatchesB
By performing a show interface to see the transmitted load txload and receive load rxload ；if the interface utilization is not maxed out ，there is no attack underwayC
By setting up an access-list to permit all ICMP，TCP，and UDP traffic with the log or log-input commands，then use the show access-list and show log commands to determine the type and sourceof attackD
By applying an access-list to all incoming and outgoing interfaces，turning off route-cache on all interfaces，then，when telnetting into the router perform a debug IP packet detail
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
多选题Which three statements about subqueries are true?（）AA single row subquery can retrieve only one column and one row.BA single row subquery can retrieve only one row but many columns.CA multiple row subquery can retrieve multiple rows and multiple columns.DA multiple row subquery can be compared by using the operator.EA single row subquery can use the IN operator.FA multiple row subquery can use the = operator.
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
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