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Huawei H12-221-ENU Exam Syllabus Topics:

Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:

1. In an OSPF routing protocol, the types of LSA involved in the calculation of intra-area routes are only Router-LSA, Network-LSA and Summary LSA.

A) True
B) False

2. Which three types of IP packet transmission methods are available? (Multiple Choice)

A) Anycast
B) Multicast
C) Unicast
D) Broadcasting

3. Run MSTP on the network. When you view the configuration on the root switch of an MSTP domain, the following command is obtained. As shown in the figure, please estimate the network size of the MSTP domain where the root switch resides.
[SWA]display stp
------- [CIST Global Info] [Mode MSTP] ------
CIST Bridge: 0.000f-e212-f8e1
Bridge Times: Hello 2s MaxAge 20s FWDly 15s MaxHop 30
CIST Root/ERPC: 0.000f-e212-f8e1/0
CIST RegRoot/IRPC: 0.000f-e212-f8e1/0
CIST RootPortId: 0.0
BPDU-Protection: disabled
CIST Root Type: PRIMARY root
TC or TCN received :3
Time since last TC: 0 days 1h:23m:36s

A) Less than 30 units
B) Less than 10 units
C) Less than 20 units
D) Less than 40 units

4. About the description of IGMP Snooping, which of the following is correct? (Multiple choice)

A) IGMP Snooping does not consume the CPU of the switch.
B) IGMP Snooping establishes a MAC multicast address table by listening to the IGMP messages sent by hosts.
C) IGMP Snooping solves the problem of multicast broadcast at Layer 3.
D) IGMP Snooping operates at the link layer and is a multicast constraint mechanism on Layer 2 Ethernet switches for managing and controlling multicast groups.

5. When two routers exchange database information through DD packets, they form a master-slave relationship first. The router with a large id must be the master and the master and slave bits must be MS.

A) True
B) False

Solutions: