The primary function of ___________________________________ is to turn an unreliable network into a reliable network that is free from lost and duplicate packets.
Fill in the blank(s) with the appropriate word(s).
TCP
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To begin designing a relational database, one must define the _____ by defining each table and the fields in it.
A. primary key B. foreign key C. physical structure D. logical structure
A select query displays fields and records that match criteria
Indicate whether the statement is true or false
A(n) ____ constructor is one that requires no arguments.
A. automatic B. implicit C. original D. default
?You work for a company that is growing. Originally, all the users in all departments had access to all the data in the database. It is considered a security risk. What is an appropriate action to reduce the risk?
A. ?Install a two-step login procedure, where the user has to key in additional information for logging in B. Install and provide stronger anti-virus software on the users' computers C. Tweak the firewall parameters so that outgoing traffic can be better controlled D. Assign roles and privileges to users so that only job-relevant data is accessible to the user.