Which of the following will list the destination MAC addresses？（）

单项选择题Anetworkadministratorofacompanyhasmanybranchlocationseachusingasubnetmaskof255.255.255.224.Whichofthefollowingdynamicroutingprotocolsshouldbeused？（）

A.IPv6
B.RIP
C.IGRP
D.RIPv2

单项选择题Auserisunabletoconnecttothenetwork.Anetworktechnicianisabletodeterminethatthereisaproblemontheswitch.Allotherusersonthatswitchareabletoconnectsuccessfullytothenetwork.Whichofthefollowingisaprobablecause？（）

A.Switching loop is occurring on the switch.
B.Wrong subnet mask on the switch.
C.Incorrect SNMP settings on the switch.
D.Port is misconfigured on the switch.

单项选择题WhichofthefollowingprotocolswouldamultilayerswitchusetolearntheIPaddressofadirectlyconnecteddevice？（）

A.ARP
B.BOOTP
C.Inverse-ARP
D.DNS

单项选择题Whichofthefollowingisthedefaultportfortelnet？（）

A.20
B.21
C.22
D.23

单项选择题Given the following routing table entries， which of the following will the next-hop address be for a packet destined for the address 192.168.1.203？（）

A.77.0.5.5
B.40.40.0.254
C.66.40.90.121
D.72.40.91.1