题目内容

Theoutputoftheshowaaadomain-mapdisplaysthefollowinginformation: Domain:isp1.com;virtual-router:vr1;loopback:1 Domain:isp2.com;virtual-router:vr2;loopback:1 Domain:none;virtual-router:vr3;loopback:1 Domain:default;virtual-router:vr4;loopback:1 Theendusersuppliesaloginnameofjoewithnodomainname. Whichvirtualrouterisresponsibleforauthenticatingthisuser?（）

A. vr1
B. vr2
C. vr3
D. vr4

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更多问题

Whatistheroleofroutepreference?（）

A. Itisusedasatiebreakerwhenthesameprefixisavailablethroughmultipleprotocols.
B. Itisusedtodeterminethepreferredpathtoagivendestination.
C. Itisusedtoselectthebestroutebetweenmultipleequal-costpaths.
D. Itisusedtoselectwhichroutingtabletouseforforwarding.

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