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Last Updated: Jun 24, 2026
IT Exam Items Repository › Category: CCNA 4 v4
Why are serial connections preferred over parallel connections for long transmission lengths?
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. While troubleshooting a serial interface, a technician enters the command show interface serial 0/0/0 . If the interface is in DCE mode, what two problems are likely to cause the indicated problem? (Choose two.)
ITExamAnswers Editorial Team asked 4 years ago • 
Which three statements correctly describe PPP authentication? (Choose three.)
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. What statement is true regarding the output shown?
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. What statement is true regarding the output shown?
ITExamAnswers Editorial Team asked 4 years ago • 
What advantage does PPP have over HDLC for serial communications?
ITExamAnswers Editorial Team asked 4 years ago • 
What function do Network Control Protocols provide for a PPP connection?
ITExamAnswers Editorial Team asked 4 years ago • 
Which three statements are correct about HDLC encapsulation? (Choose three.)
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. What can be concluded about the function of the Serial 0/0/0 interface on the router after the commands are entered?
ITExamAnswers Editorial Team asked 4 years ago • 
Which authentication protocol can be spoofed to allow playback attacks?
ITExamAnswers Editorial Team asked 4 years ago • 
Which two statements are true about time-division multiplexing (TDM)? (Choose two.)
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. On the basis of the show interface Serial0/0 output, how many NCP sessions have been established?
ITExamAnswers Editorial Team asked 4 years ago • 
Which serial communications DTE/DCE interface standard is used to provide high-speed connectivity of up to 52 Mbps between LANs and is found on many high-end Cisco routers?
ITExamAnswers Editorial Team asked 4 years ago • 
Refer to the exhibit. Router R1, the DCE device, has just been configured for PPP encapsulation with authentication. What series of commands will allow another router, the DTE device, to communicate over its serial 0/0/0 interface to router R1?
ITExamAnswers Editorial Team asked 4 years ago • 
What type of connectivity is established when VPNs are used from the remote site to the private network?
ITExamAnswers Editorial Team asked 4 years ago • 
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