多项选择题
Which two statements about NTP version 4 are true？（）
A.It supports fast synchronization at starting and before network failures
B.It supports automatic server discovery
C.It uses a fixed-point arithmetion
D.It supports the "nanokernel" kernel implementation
E.It does not support Public-Key Cryptography
相关考题
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多项选择题
Process-levelredundancyisimplementedbyasystemmanagerprocessthatcreatesthestandbyprocess.Whattwofunctionsareprovidedbythesystem-levelprocesscalledQnetSymlinkManager（QSM）？（）
A.backing up the information for the broken connections
B.provides common information for connecting processes and services
C.detection of a failed connection
D.provides an abstract name for a process or service
E.distribution of symbolic link information -
单项选择题
InPIM-SMoperations，towhichdevicedoesthefirstrouterthatconnectswiththemulticastsourcesendtheregistermessage？（）
A.RP
B.multicast source
C.IGMP router
D.multicast receiver
E.PIM designated router -
单项选择题
WhatarethedefaultvaluesforGREtunnelkeeplivetimeandnumberofretries？（）
A.5 seconds and 3 retries
B.10 seconds and 5 retries
C.10 seconds and 3 retries
D.20 seconds and 5 retries
E.5 seconds and 5 retries
