Which one of the statements below correctly describes the Virtual Router Redundancy Protocol  （VRRP），  which is being used in the Company network to provide redundancy？（）

A . Can host Active Server Pages Web sites B . Can host PHP Web sites C . Includes a DB2 server D . Includes an integrated Web application server

A . SELECT UNIQUE dept FROM staff B . SELECT DISTINCT dept FROM staff C . SELECT (dept) UNIQUE FROM staff D . SELECT (dept) DISTINCT FROM staff

A . It is restricted in size to only three segments B . It requires the use of netBT as the network protocol C . It requires the implementation of IKE D . It relies on an underlying Public Key Infrastructure

A . the direct acting relief valve is used for controlling lower flows and pressure B . the pilot operated relief valve is used for controlling higher flows and pressure C . the pilot operated relief valve is used for controlling lower flows and pressure D . the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve

A . BGP uses TCP port 179. B . BGP ensures reliability of updates by using the reliable transport services of TCP. C . The network command with the mask option never insta lls a prefix into the BGP table unless there is a matching prefix exists in the IP route table. D . A TCP connection is required before exchanging updates. E . BGPuses notification and the update messages to establish and maintain the BGP neighbor relati onship.

A . pages are design elements B . Pages can be full-text indexed  C . pages  can be referenced by outlines or frames   D . pages  can include text,graphics ,applets,and link

A . Surrounding the fixed shaft is a hollow shaft B . This hollow shaft carries radial bores C . Each bore is fitted with a well-lapped plunger D . There are always even numbers of bore

A . FIELD Type :="action"      B . SELECT Type ="action"  C . SELECT Type :="action "       D . @if (type="action";@success;@failure)&e

A . clients connected to the rogue access point must be able to connect to the containment controller-based access point. B . multiple controller-based access points will load-balance the containment task using fewer resources than a single access point. C . clients connected to the rogue access point may be out of the range of the controller-based access point providing containment. D . each controller-based access point can handle only a limited amount of clients connected to the rogue access points.

A . The rams work inside cylinders B . The cylinders have glands sealing their open ends C . The rams are connected to a cross-head D . The cross-head is mounted on the rudder stock

A . Deleting unusable addresses through the creation of many subnets. B . Combining routes to multiple networks into one supernet. C . Reclaiming unused space by means of changing the subnet size. D . Calculating the available host addresses in the AS.

A．The amount of money that people hold is negatively related with the interest rate. B．As the level of national income rises, the amount of money balances that individuals hold decreases. C．Both the level of national income and the interest rate affect the demand for money balances. D．Other things constant, an increase in the real interest rate reduces the demand for real money balances.

A．It can help people consciously switch between tasks. B．It doesn"t take as much time as the stage of goal shifting. C．People will use similar rules while performing different tasks. D．It can help explain why time is lost during task switching.

A．Cyclical unemployment exists when there are more job vacancies than there are individuals looking for jobs. B．Cyclical unemployment exists when there is a GNP gap. C．Cyclical unemployment is not included in the natural rate of unemployment. D．The duration of cyclical unemployment is affected by the level of aggregate demand.

A.“Spectrum” here refers to a wide variety of different opinions. B.Obama tries to respond to some of the doubts over his candidacy. C.Obama tries to point out a misjudgment a lot of people had for his candidacy --- Obama could become the candidate of the president just because he took advantage of some of the policies that favored the underprivileged people such as the black, the women, the disabled in order to ensure the social equality and his candidacy had nothing to do with his qualification D.Obama tries to point out a misjudgment a lot of people had for his candidacy --- Obama could become the candidate of the president just because a lot of people agree to do so.

A．The amount of Vitamin D intake for the author"s first child is a half of that for her third child. B．The author"s new born baby was taking Vitamin D pills. C．Sunshine can help produce Vitamin D. D．The author"s second child did not have any Vitamin D supplement when born.

A、Room service is a small department in a big hotel, but not necessary. B、Room service can help support a higher average daily rate for guest room. C、Room service attract more occupancy. D、Room service is a service people expect, enjoy and will pay for.

A．A.A revaluation gain on an investment property B．B.Profit on sale of an investment C．C.Receipt of a government grant D．D.Gain on revaluation of a factory building