Which of the following fields in an e-mail header can be used to sort messages according to the sender?
A. Date
B. Subject
C. From
D. To
Answer: C
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Prove that the total number of closed walks of length k in a graph is equal to
A three-phase commit protocol has the following parts: Phase 1: is the same as for two-phase commit. Phase 2: the coordinator collects the votes and makes a decision; if it is No, it aborts and informs participants that voted Yes; if the decision is Yes, it sends a preCommit request to all the participants. participants that voted Yes wait for a preCommit or doAbort request. They acknowledge preCommit requests and carry out doAbort requests. Phase 3: the coordinator collects the acknowledgments. When all are received, it Commits and sends doCommit to the participants. participants wait for a doCommit request. When it arrives they Commit. Explain how this protocol avoids delay to participants during their ‘uncertain’ period due to the failure of the coordinator or other participant
What will be an ideal response?
Use ________ to move to the beginning of a word
A) Ctrl + Left arrow key B) Ctrl + End C) Ctrl + Alt D) Ctrl + Home
When installing a new video card in a system, which of the following is not correct about the process?
a. Use any PCIe x16 slot for the card. b. Connect the appropriate power lead to the card. c. Remove a slot cover if the card needs the space for its cooling fan exhaust. d. Install new drivers after uninstalling old ones.