The DiffServ technique for addressing QoS issues defines what two different types of data stream forwarding?
What will be an ideal response?
ANSWER: DiffServ defines the following two types of forwarding:
* EF (Expedited Forwarding)-A data stream is assigned a minimum departure rate from a given node. This technique circumvents delays that slow normal data from reaching its destination on time and in sequence.
* AF (Assured Forwarding)-Different levels of router resources can be assigned to data streams. AF prioritizes data handling, but provides no guarantee that on a busy network messages will arrive on time and in sequence.
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Subroutines can be used in a flat transaction in an attempt to mimic the behavior of a subtransaction in the nested model: whenever a subtransaction aborts, the corresponding subroutine manually undoes any database updates it has performed and returns with status indicating failure. Explain why the nested model allows higher transaction throughput.
What will be an ideal response?
Which of the following is not a valid Visual Basic data type?
a. Integer b. Number c. Decimal d. Short
The content of ____ layers is not affected when onion skinning is turned on.
A. unlocked B. locked C. embedded D. indexed
The word ____ is used to declare an array.
A. DimArray B. Array C. InitArray D. Dim