HCIE-Datacom Changed H12-891_V1.0 Questions

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Question 76

A multi-protocol network, the topology is shown in the figure. Take a closer look at the topology, router R4 (in Areal) is introduced into the OSPF process via the routes learned by BGP. So what categories of LS4 will R3 advertise to zone 0?( Multiple choice questions).

Options:

5 ?LSA

7 ?LSA

1 ?LSA

4 ?LSA

2 ?? ??

Question 77

In the description of the MAC address spoofing attack, the error is ? Radio

Options:

Mac address spoofing attacks cause the switch to learn the wrong mapping of Mac addresses to IP addresses

A MAC address spoofing attack causes the data that the switch is sending to the correct destination to be sent to the attacker

MAC address spoofing attacks primarily exploit the switch Mac address learning mechanism

An attacker can perform a MAC address spoofing attack by sending a forged source Mac address data frame to the switch

Question 78

Two routers, connected together through the serial port, but can not ping between each other , now check the port status as follows: Can the following information determine what the cause is?

Options:

Insufficient link bandwidth

The IP addresses on both ends are not on the same network segment

The link layer protocols on both ends are inconsistent

Subnet mask does not match the

Question 79

As shown in the figure, three switches S1, SW, and SN3, where SWI is the root bridge, and link congestion occurs between SI and SW2, SWD cannot receive the configuration BPDU sent by the root bridge, which spanning tree protection mechanism does the administrator need to configure to prevent the problem caused by link congestion?( Single choice questions).