Which of the following is true concerning a global transaction?
Options: The required data are at one local site and the distributed DBMS routes requests as necessary., The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary., The required data are at one local site and the distributed DBMS passes the request to only the local DBMS., The required data are located in at least one nonlocal site and the distributed DBMS passes the request to only the local DBMS.
. Which statement is valid about computer program?
Options: A) High level languages must be converted into machine language to execute
B) High level langage programs are more efficient and faster to execute
C) It is more difficult to identify errors in high level language program than in low level programs
D) All of above
Options: passes lower-frequency signals and reduces higher-frequency signals, passes higher-frequency signals and reduces lower-frequency signals, has no effect on ac signals, reduces the level of all frequencies by a significant amount
Before any changes to database structure are attempted one should first:
Options: clearly understand the current structure and contents of the database only., test any changes on a test database only., create a complete backup of the operational database only., All of the above should be done.
You type Router#sh ru and receive an % ambiguous command error. Why did you receive this message?
Options: The command requires additional options or parameters., There is more than one show command that starts with the letters ru., There is no show command that starts with ru., The command is being executed from the wrong router mode.