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2021 Oct H12-211 exam answers

Q481.  (Topic 1) 

: 84 

Which of the following operating systems support for PPPoE dial-up client by default? 

A. Windows 95 

B. windows 98 

C. windows 2000 

D. windows xp 

Answer: D 


Q482.  (Topic 2) 

NAT can solve the problem is 

A. Save Internet public address. 

B. router forwarding performance improved 

C. Strengthening the security of data transmission 

D. to prevent computer virus attacks 

Answer: A 


Q483.  (Topic 2) 

: 212 

Below () the message is the ICMP packet. 

A. Echo request packet 

B. timestamp reply message 

C. inquiry packet router 

D. router advertisement message 

Answer: A,B,C,D 


Q484.  (Topic 4) 

by LSDB, each router as its own compute a () node of the shortest path tree. 

A. Root 

B. Leaf 

C. Specify the root 

D. Backup 

Answer: A 


Leading H12-211 actual test:

Q485.  (Topic 2) 

Telnet protocol uses the port number is 

A. 23 

B. 25 

C. 27 

D. 29 

Answer: A 


Q486.  (Topic 1) 

: 192 

TCP is connection-oriented reliable transport protocol, following which mechanism is used to protect the transmission reliability 

A. confirmation (acknowledgement) mechanism 

B. caching (buffering) 

C. source quench packets (source quench messages) 

D. Retransmission (retransmit) mechanism 

Answer: A,D 


Q487.  (Topic 1) 

: 95 

ADSL, there are two channels work, they are 

A. Fast 

B. serial transmission 

C. Fourier Transform 

D. intertwined 

E. parallel transmission 

Answer: A,D 


Q488.  (Topic 2) 

IEEE developed a data transfer rate of 100Mbps Fast Ethernet standards, transmission media including fiber optic and twisted pair. Single-mode fiber (SMF) cable transmission distance (). 

A. equal to 1Km 

B. greater than 2Km 

C. less than 550m 

D. equal to 2Km 

Answer: B 


Q489.  (Topic 4) 

ATM features include 

A. Connection-oriented 

B. fast packet switching 

C. Statistical Multiplexing 

D. Support for multi-rate, multi-service 

E. supports voice, data and image 

F. provide complete real-time QoS guarantee business 

Answer: A,B,C,D,E,F