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 H12-891_V1.0 Dumps with Practice Exam Questions Answers

Questions: 610 questions

Last Update: Feb 26, 2024

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H12-891_V1.0 Questions and Answers

Question # 1

Regarding the sliding window of TCP, what are the following descriptions that are enough to be wrong? ( Multiple choice question)


The sender declares the initial window size


The sender does not need to transmit messages of full window size


The TCP sliding window allows multiple packets to be sent before an acknowledgment is received


After the retransmission timer times out, the sender has not received an acknowledgment and will retransmit unacknowledged data


The receiver needs to acknowledge the sender's packet


Sliding window size can only be increased or remain unchanged

Question # 2

If all the public IP addresses are used by a company's intranet users to access the Internet using NAT's No-pat method, what will happen to subsequent intranet users who access the Internet?


automatically switch NAT to PAT after the Internet


Subsequent intranet users will not be able to access the Internet


Synchronize messages to other NAT conversion devices for NAT conversion


Squeeze out the previous user and force NAT conversion to go online

Question # 3

Which address prefix in the following options indicates that the address is globally unique and globally routable among unicast addresses in IPv6, similar to a public address in IPv4?(). Single choice questions).









Question # 4

Which of the following sequences can be matched by the regular expression [^100|200]$?


300200 100


200 100 300


100 200 300



Question # 5

Man-in-the-middle attacks or IP/MAC spoofing attacks can lead to information leakage and other hazards, and are more common in the intranet, in order to prevent man-in-the-middle attacks or IP/MAC spoofing attacks, you can take the configuration method


Enable DHCP snooping to check the chaddr field in a DHCP request message


Configure the trusted/untrusted interface


Configure DHCP snooping on the switch to interbolde with DAI or IPSG


Limit the maximum number of MAC addresses allowed to be learned on the switch interface