?Almost all MANs are based on one of two basic forms of supporting technology: ____ or Ethernet.
A. ?SONET
B. ?SOHO
C. ?GALNET
D. ?SWNET
Answer: A
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Construct a relational algebra query that produces the same result as the outer join r outer cond s using only these operators: union, di?erence, Cartesian product, projection, general join (not outer join). You can also use constant relations, that is, relations with ?xed content (e.g., one that has tuples ?lled with nulls or other prede?ned constants).
Let nullR be the relation over R that contains only one tuple, which entirely consists of NULLs. Similarly, let nulls be a relation over S that has a single NULL-tuple. Then r outer conds is:
You can restrict the display of PivotTable data using a(n) ____________________, a graphic object with a set of buttons that allow you to easily filter your PivotTable data to show only the data you need.
Fill in the blank(s) with the appropriate word(s).
Which type of network topology connects multiple devices to a central device?
A. Mesh B. Star C. Bus D. Point-to-point
Under what circumstances would you use the XCOPY command in the Windows 10 CLI?
What will be an ideal response?