A、The UNIQUE constraint does not permit a null value for the column.
B、A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
C、The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
D、The NOT NULL constraint ensures that null values are not permitted for the column.
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A、A. This command is applied to the core router facing interface. B、B. This command is applied to the customer facing interface. C、C. The 4 is locally significant and identifies the layer 2 circuit. D、D. The 4 must match exactly on the peer router configuration on the remote end.
A、A. All the routes were redistributed into BGP from an IGP B、B. All the routes were originated by BGP with the network command C、C. All six routes will be installed in the routing table D、D. Four routes will be installed in the routing ta ble E、E. Two routes will be installed in the routing table
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A、A view can be created as read only. B、A view can be created as a join on two or more tables. C、A view cannot have an ORDER BY clause in the SELECT statement. D、A view cannot be created with a GROUP BY clause in the SELECT statement. E、A view must have aliases defined for the column names in the SELECT statement.
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A、A.AhubisconnecteddirectlytoFastEthernet0/5 B、B.FastEthernet0/1isconfiguredasatrunklink. C、C.FastEthernet0/5hasstaticallyassignedmacaddress D、D.InterfaceFastEthernet0/2hasbeendisable. E、E.MultipledevicesareconnecteddirectlytoFastEthernet0/1. F、F.FastEthernet0/1isconnectedtoahostwithmultiplenetworkinterfacecards.
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