List five items that need to be reviewed regularly by a Linux system administrator.
What will be an ideal response?
Physical system security
Disk backups
Addition and removal of authorized users
Verification of proper file permission settings
Installation and configuration of server and client applications
Examination and review of system resources (memory, disks, etc.)
Setting up and maintaining printers
Performance monitoring and tuning
System start-up and shut-down options
System log files review
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A pure virtual function
A) is a virtual function that has been completely debugged. B) is a virtual function that has no implementation. C) is a virtual function that performs a single task in program. D) is one that is only called from within a virtual constructor. E) None of the above
What is the default quorum selection for a cluster that has an even number of host computers?
A. node majority B. node and disk majority C. node and file share majority D. no majority: disk only
What are the rules for naming a variable?
What will be an ideal response?
Using the below relational schema, determine whether the following query is both type and semantically correct:
``` SELECT CO.clientNo, cAddress FROM TransportReq TR, ClientOrder CO, Client C, Unit U, Trailer T WHERE CO.clientNo = C.clientNo AND TR.unitRegNo = U.unitRegNo AND TR.trailerNo = T.trailerNo AND maxCarryingWt < maxPayload AND LoadWeight < maxPayload; ```