Which of these statements best describes VPLS？（）A、 Neither broadcast nor multicast traffic is ever flooded in VPLS.B、 Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.C、 VPLS emulates an Ethernet switch， with each EMS being analogous to a VLAN.D、 Because U-PE devices act as IEEE 802.1 devices， the VPLS core must use STP.E、 When the provider experiences an outage， IP re-routing restores PW connectivity and MAC re-learning is needed.
Which of these statements best describes VPLS？（）
- A、 Neither broadcast nor multicast traffic is ever flooded in VPLS.
- B、 Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.
- C、 VPLS emulates an Ethernet switch， with each EMS being analogous to a VLAN.
- D、 Because U-PE devices act as IEEE 802.1 devices， the VPLS core must use STP.
- E、 When the provider experiences an outage， IP re-routing restores PW connectivity and MAC re-learning is needed.
相关考题：
The true value of life is not in_________, but in_________.() A.which we get, which we giveB.what we get, what we giveC.which do we get, which do we giveD.how we get, how we give
He asked ____.A.which chair should he takeB.which chair he should takeC.which chair he takeD.which chair he took
An overtaken vessel means a vessel________.A.which has been overtaken by another vesselB.which is going to overtake another vesselC.which has overtaken another vesselD.which is going to be overtaken by another vessel
A feedback is an input ____A.which governs the state of a variableB.which provides a visual and audible alarmC.which indicates values of controlled variablesD.which measures the state of the controlled variable
Which command would you type to see a concise display of which interfaces are up and which are down?() A.show interfaces briefB.show interfaces statusC.show ip interface briefD.show interfaces terse
WhichexplanationdescribesawirelessclientIGMPmulticastjoinrequestusingaCiscoUnified WirelessNetworkv5.2architectureofAPtoWLANcontroller?() A.passedbytheAPtoitsconnectedswitchandthenforwardeddirectlytotheconnectedrouter，which createsanMGIDtableentryB.passedbytheAPtotheWLANcontrollerandthenforwardedtothesourcePIM-enabledrouter，which createsanMGIDtableentryC.passedbytheAPtotheWLANcontroller，whichcreatesanMGIDtableentrybeforeforwardingtothe directlyconnectedPIM-enabledrouterD.passedbytheAPtoitsconnectedswitchandthenforwardedtotherendezvouspointrouter，which createsanMGIDtableentry
Bulk cargo refers to ______.A.cargo which occupies a large volume of spaceB.cargo which requires refrigerationC.cargo which is very denseD.homogeneous cargo not enclosed in a container
For a floating vessel, the center of flotation is the point in the waterplane ______.A.about which the vessel lists and trimsB.which coincides with the center of buoyancyC.which, in the absence of external forces, is always vertically aligned with the center of gravityD.which is shown in the hydrostatic tables as VCB
He has made another wonderful discovery, ____ of great importance to science.A. which I think is B. which I think it isC. I think which is D. of which I think it is
He has made a discovery, ___ of great importance to the progress of science and technology.A.which I think it isB.which I think isC.think which isD.of which I think it is
This growth,（）mainly in Southeast Asia and Africa, has dramatic consequences.A、happensB、which is happeningC、which happeningD、which happened
Which of the following utilities are used to choose which programs run at startup？ （）A、SFCB、SETDEBUGC、MSCONFIGD、REGEDIT
Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）A、It is the time period after which the undo data becomes obsolete.B、It is the time period after which the committed undo data would be transferred to a temporarytablespace.C、It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
单选题Set of current is（）.Aits velocity in knotsBdirection from which it flowsCestimated currentDdirection toward which it flows
单选题If the redelivery of a vessel is delayed by causes （），hire is payable at the charter rate until redelivery even though the market rate may have gone up or down.Afor which neither party is responsibleBfor which the owner is responsibleCfor which either party is responsibleDfor which the charterer is responsible
单选题The temperature （） a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure （） it is subjected in the containing vessel.Aat which/to whichBfrom which/at whichCto which/from whichDin which/on which
单选题General, the best way for replacement of lamp is （）.Aafter the point is reached at which the failures begin to increase rapidlyBbefore the point is reached at which the failures begin to increase rapidlyCbefore the point is reached at which the failures begin to increase slowlyDafter the point is reached at which the failures begin to increase slowly
单选题The flash point of a liquid refers to the temperature （）Aat which a liquid will give off inflammable vaporsBat which a liquid will burn steadilyCat which a liquid will explodeDthat a liquid must reach before it will flow readily
单选题You are configuring the data source for an Oracle database. You will need to specify a test table for WebLogic to test the status of the database. Which option should you choose?（）Aa table name which has 100s of recordsBa table name which has 10s of recordsCa table name which has empty recordsDa table name which has 1000s of recordsEnever use a table name
单选题Which of the following statements is correct concerning the “flash point ” of a liquid?（）AIt is lower than the ignition temperatureBIt is the temperature at which a substance will spontaneously igniteCIt is the temperature at which a substance, when ignited, will continue to bumDIt is the temperature at which the released vapors will fall within the explosive range
单选题Which command would you type to see a concise display of which interfaces are up and which are down?（）Ashow interfaces briefBshow interfaces statusCshow ip interface briefDshow interfaces terse
单选题At an unsheltered anchorage the chief engineer officer shall consult with the master whetheror not to maintain an underway watch“An underway watch” means（）Aa watch which is kept with lower standardBa watch which is kept when the ship isnt sailingCa watch which is kept when the ship is sailingDa watch which is kept when the ship is in a restricted visibility area
单选题Living in the western part of the country has its problems, ______ obtaining fresh water is not the least.Awith which Bfor which Cof which Dwhich
单选题Where does the look-out man stand?（）.AIn positions in which the noises in the ship are least likely to interfere with the hearing of a fog signal and the man can see clearlyBIn positions in which the noises in the ship are much likely to interfere with the hearing of a fog signalCIn positions in which the hearing of a signal is reduced to a minimumDIn a position in which the man can see clearly
单选题Set of current is（）.Avelocit in knotBirection from which it flowsCestimated currentDdirection toward which it flows
单选题Bulk cargo refers to（）.Acargo which occupies a large volume of spaceBcargo which require refrigerationCcargo which is very denseDhomogeneous cargo not enclosed in a container
单选题The temperature of the fuel oil received during bunkering operations is critical in determining the（）Aexpansion space to leave in a tankBflash point at which the fuel will burnCtemperature to which the fuel must be heatedDrate at which the fuel can be pumped during transfer operations