1000BaseT has a MAXIMUM run distance of:（）A、25 meters (82 feet)B、100 meters (328 feet)C、500 meters (1640 feet)D、1000 meters (3280 feet)
1000BaseT has a MAXIMUM run distance of:（）
- A、25 meters (82 feet)
- B、100 meters (328 feet)
- C、500 meters (1640 feet)
- D、1000 meters (3280 feet)
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Consider the query:Mysql＞ SET @run = 15;Mysql＞ EXPLAIN SELECT objective, stage, COUNT (stage)FROM iteminformationWHERE run=@run AND objective=’7.1’GROUP BY objective,stageORDER BY stage;The iteminformation table has the following indexes;Mysql＞ SHOW INDEXES FROM iteminformation:This query is run several times in an application with different values in the WHERE clause in a growing data set.What is the primary improvement that can be made for this scenario?（）A.Do not pass a user variable in the WHERE clause because it limits the ability of the optimizer to use indexesB.Add an index on the objective column so that is can be used in both the WHERE and GROUP BY operationsC.Drop the run_2 index because it has caused a conflict in the choice of key for this queryD.Execute the run_2 index because it has caused a conflict in the choice of key for this queryE.Add a composite index on (run,objective,stage) to allow the query to fully utilize an index
1000BaseT has a MAXIMUM run distance of:() A. 25 meters (82 feet)B. 100 meters (328 feet)C. 500 meters (1640 feet)D. 1000 meters (3280 feet)
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You are the network administrator for Company.com. Your Windows 2000 Professional computer has 128 MB of RAM and two physical hard disks. Each hard disk has a single partition configured as drive C and D. Each partition has more than 500 MB of free disk space. Windows 2000 Professional and all applications are installed on drive C. You frequently run two or more memory-intensive graphics applications simultaneously. You notice that access to drive C is much slower when you are using the graphics applications. You want to maximize overall disk performance for your computer. What should you do?（）A、Configure the paging file to reside on drive C onlyB、Configure the paging file to reside on drive D onlyC、Configure the initial size of the paging file and the maximum size of paging file to 64 MBD、Configure the initial size of the paging file and the maximum size of the paging file to 128 MBE、Configure the initial size of the paging file and the maximum size of the paging file to 256 MB
多选题A user logs in and is mapped to two roles. The first role has a maximum timeout value of 600 minutes and the default Juniper Networks logo on the user interface page. The second role has a maximum timeout value of 1200 minutes and a custom logo on the user interface page. Based on the merging of these two roles, which two will be applied?（）AA custom logo on the user interface pageBA maximum timeout value of 600 minutesCA maximum time out value of 1200 minutesDA default Juniper Networks logo on the user interface page
单选题The "1000" in 1000BaseT cabling represents which of the following?（）AThe theoretical maximum cable lengthBThe theoretical maximum bandwidthCThe theoretical port limit of the cableDThe quality level of the copper wiring used
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单选题An administrator has mirrored the root volume group to a second disk， but ’bootlist’ is failing to correctly add the second disk. What is the likely cause of the problem？（）AThe administrator has failed to run ’bosboot -ad 2nd disk’ prior to the bootlist command.BThe administrator has failed to run ’bootinfo -B 2nd disk’ prior to the bootlist command.CThe administrator has failed to run ’mirrorvg -m rootvg 2nd disk’ prior to the bootlist command.DThe administrator has failed to run ’bosboot -ad /dev/ipldevice 2nd disk’ prior to the bootlist command.
多选题You are the network administrator for Company.com. Your Windows 2000 Professional computer has 128 MB of RAM and two physical hard disks. Each hard disk has a single partition configured as drive C and D. Each partition has more than 500 MB of free disk space. Windows 2000 Professional and all applications are installed on drive C. You frequently run two or more memory-intensive graphics applications simultaneously. You notice that access to drive C is much slower when you are using the graphics applications. You want to maximize overall disk performance for your computer. What should you do?（）AConfigure the paging file to reside on drive C onlyBConfigure the paging file to reside on drive D onlyCConfigure the initial size of the paging file and the maximum size of paging file to 64 MBDConfigure the initial size of the paging file and the maximum size of the paging file to 128 MBEConfigure the initial size of the paging file and the maximum size of the paging file to 256 MB
单选题1000BaseT has a MAXIMUM run distance of:（）A25 meters (82 feet)B100 meters (328 feet)C500 meters (1640 feet)D1000 meters (3280 feet)