Multicast TTL 阈值不影响单播数据包。
第1题:
此题为判断题(对,错)。
第2题:
A. RTA will forward RP announcements provided they are within the scope of 31.
B. RTA will originate RP announcements with TTL s et to 31.
C. RTA will originate RP announcements for multicast groups that match access - list 5.
D. RTA will drop all RP announcements it receives if the TTL field is greater than 31.
第3题:
A、其噪声容限较TTL电路较小
B、其抗干扰能力较TTL电路稍差
C、其噪声容限较TTL电路较大
第4题:
A.广播(Broadcast)
B.组播(Multicast)
C.单播(Unicast)
D.细播(slivercast)
第5题:
A.TTL(TimeToLivE.指的是IP数据包在网络上的生存期
B.TTL值的特性常被用来进行网络路由探测
C.无论何种操作系统,它们在设计的时候都满足RFC文档的规定,将发送出去的网络数据包中的TTL都设置成一样的值
D.IP数据包中的TTL值每经过网络上的一个路由器或者网关时,都会被减去一,直到该数据包顺利发送至接收方或者变成零为止
第6题:
A.14
B.15
C.16
D.17
第7题:
A.Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3
B.Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget her
C.Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1
D.Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers
E.The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses
F.Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
第8题:
A.IP单播数据包
B.IP广播数据包
C.IP组播数据包
D.非IP协议数据包
第9题:
A.广播帧Broadcast frame
B.组播帧Multicast frame
C.已知单播帧Known unicast
D.未知单播帧Unknown unicast
第10题:
交换机的流量控制可以预防因为广播数据包、组播数据包及因目的地址错误的单播数据包数据流量过大造成的带宽异常负荷。()