Free H12-221 – HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) Practice Test Question

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  The high-order 24 bits of a multicast MAC address are 0x01005e while the low-order 23 bits of a multicast MAC address are the low-order 23 bits of a multicast IP address.

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  One multicast MAC address can map 32 different IP multicast addresses.

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  Multicast MAC addresses are used in the link layer to identify receivers that are in the same multicast group.

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  One multicast MAC address can map only one IP multicast address.
  
  

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  The Link ID of point-to-point links are the neighbors Interface IP address.

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  The Link ID of TransNet links are the network address of TransNet network segment.

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  The Link ID of StubNet links are the network address of stub network.

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  The Link ID of virtual links are the neighbor's Router ID of virtual link.
  
  

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  Multicast distribution trees are classified into two types: SFT and RPT.

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  The PIM-SM protocol can generate both RFTs and SPTs.

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  The PIM-55M protocol can generate only SFTs.

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  The PIM-DM protocol can generate both RFTs and SFTs.
  
  

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  Multicast RPF does not depend on unicast routing.

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  All multicast protocols adopt the RPF mechanism.

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  A router discards the received multicast packets if the RPF check fails.

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  The RPF mechanism has two functions: It prevents multicast routing loops and the forwarding of redundant multicast packets.
  
  

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  OSPF

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  RIP

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  BGP

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  Static
  
  

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  LS type

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  Link state ID

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  Advertising Router

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  LS Sequence number
  
  

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  Plan subnet 192.168.1.0/25 for Department
  The range of host addresses is 1 to 126.

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  Plan subnet 192.168.1.128/27 for Department
  The range of host addresses is 129 to 159.

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  Plan subnet 192.168.1.160/27 for Department
  The range of host addresses is 161 to 190.

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  Plan subnet 192.168.1.192/27 for Department
  The range of host addresses is 192 to 222.
  
  

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  Established

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  OpenSent

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  Active

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  Idle
  
  

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  TRUE

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  FALSE
  
  

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  TRUE

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  FALSE
  
  

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  TRUE

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  FALSE
  
  

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  P2P

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  P2MP

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  Broadcast

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  Virtual link
  
  

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  All routers in the same AS must use the same MD5 password.

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  A pair of BGP peers must use the same MD5 password.

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  All BGP peers must use the same MD5 password.

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  Every BGP peer of a router must use a unique MD5 password.
  
  

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  180s

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  90s

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  60s

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  30s
  
  

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  TRUE

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  FALSE