QUESTION: 5

Which of the following statements about the VRRP protocol is correct?

Both VRRPv2 and VRRPv3 support authentication
VRRPv3 does not support the authentication function, while VRRPv2 supports the authentication function.
VRRPv2 is only applicable to IPv4 networks, and VRRPv3 is only applicable to IPv6 networks.
Masterr The owner of the IP address VThe RP priority is 255, so the configurable priority range is 0-254

Answer(s): B

Explanation:

VRRP forIPv4 supports VRRPv2 and VRRPv3, while VRRP for IPv6 only supports VRRPv3. Through packet construction, it can be found that v2 has an authentication field, but v3 does not.

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QUESTION: 6

HW users are transferring a very large number of files via TFTP.
What protocol does TFTP rely on for transmission?

ICMP and UDP
IP and TCP
UDP
NFS
FTP

Answer(s): C

Explanation:

TFTP (Trivial File Transfer Protocol, Simple File Transfer Protocol) is one of the TCP/IP protocol suite used between client and serverA protocol for simple file transfer between them, providing uncomplicated and inexpensive file transfer services. It is implemented based on the UDP protocol, and the port number is 69.

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QUESTION: 7

Bandwidth parameters need to be configured when deploying LLQ.
What is the significance of the bandwidth parameters?

Provides a built-in policer to limit the maximum available bandwidth for low-latency queues during times of congestion
This parameter should be as small as possible. It means that the bandwidth is always reserved, even if LLQ is used, this parameter will reduce the available bandwidth of the interface
It means reference CIR to calculate burst size of built-in policer token bucket
This parameter is optional because LLQ always takes precedence over other queues

Answer(s): A

Explanation:

LLQ (Priority Queue) Provides absolute priority queuing for class-based weighted fair queuing (CBWFQ). A strict priority queue is a priority queue with a minimum guaranteed bandwidth.
When congestion occurs, the amount of data in the queue cannot exceed the allowed amount. bandwidth, otherwise it will be discarded.

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QUESTION: 8

Assuming that the shaping rate of a port is 100Mbps, the input bandwidth of each service on the interface and the PIR of the IP configuration are as follows: After the first round of scheduling, what is the bandwidth allocated by the EF queue?

Answer(s): D

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QUESTION: 5

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QUESTION: 7

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QUESTION: 8