2. Which command can be used to view the cable type that is attached to a serial interface?

Transcription

1 CCNA 4 Chapter 3 v5.0 Exam Answers 2015 (100%) 1. At which layer f the OSI mdel des multiplexing take place? Layer 1 Layer 2 Layer 3 Layer 4 2. Which cmmand can be used t view the cable type that is attached t a serial interface? Ruter(cnfig)# shw interfaces Ruter(cnfig)# shw cntrllers Ruter(cnfig)# shw ip interface Ruter(cnfig)# shw ip interface brief 3. Which field marks the beginning and end f an HDLC frame? Data FCS Cntrl Flag 4. Which serial 0/0/0 interface state will be shwn if n serial cable is attached t the ruter, but everything else has been crrectly cnfigured and turned n? Serial 0/0/0 is up, line prtcl is up Serial 0/0/0 is up, line prtcl is dwn Serial 0/0/0 is dwn, line prtcl is dwn Serial 0/0/0 is up (lped) Serial 0/0/0 is up (disabled) Serial 0/0/0 is administratively dwn, line prtcl is dwn 5. Which is an advantage f using PPP n a serial link instead f HDLC? ptin fr authenticatin higher speed transmissin fixed-size frames ptin fr sessin establishment 6. What are three cmpnents f PPP? (Chse three.) CCNA 5 Page 1

2 authenticatin LCP multilink NCP cmpressin HDLC-like framing 7. Hw des PPP interface with different netwrk layer prtcls? by using separate NCPs by negtiating with the netwrk layer handler by encding the infrmatin field in the PPP frame by specifying the prtcl during link establishment thrugh LCP 8. Which address is used in the Address field f a PPP frame? a single byte f binary a single byte f binary a single byte f binary the IP address f the serial interface 9. Which three physical layer interfaces supprt PPP? (Chse three.) FastEthernet GigabitEthernet POTS asynchrnus serial synchrnus serial HSSI 10. Which three are types f LCP frames used with PPP? (Chse three.) link-negtiatin frames link-acknwledgment frames link-maintenance frames link-terminatin frames link-cntrl frames link-establishment frames 11. Which prtcl will terminate the PPP link after the exchange f data is cmplete? NCP LCP CCNA 5 Page 2

3 IPCP IPXCP 12. During a PPP sessin establishment phase, which tw messages are sent by the requested party if the ptins are nt acceptable? (Chse tw.) Cnfigure-Nak Cde-Reject Prtcl-Reject Cnfigure-Reject Discard-Request 13. Which three statements are true abut PPP? (Chse three.) PPP can use synchrnus and asynchrnus circuits. PPP can nly be used between tw Cisc devices. PPP carries packets frm several netwrk layer prtcls in LCPs. PPP uses LCPs t establish, cnfigure, and test the data link cnnectin. PPP uses LCPs t agree n frmat ptins such as authenticatin, cmpressin, and errr detectin. 14. Which PPP ptin can detect links that are in a lped-back cnditin? Magic Number MRU Callback ACCM 15. When cnfiguring Multilink PPP, where is the IP address fr the multilink bundle cnfigured? n a physical serial interface n a subinterface n a multilink interface n a physical Ethernet interface 16. Refer t the exhibit. Which statement describes the status f the PPP cnnectin? CCNA 5 Page 3

4 Only the link-establishment phase cmpleted successfully. Only the netwrk-layer phase cmpleted successfully. Neither the link-establishment phase nr the netwrk-layer phase cmpleted successfully. Bth the link-establishment and netwrk-layer phase cmpleted successfully. 17. Refer t the exhibit. A netwrk administratr is cnfiguring the PPP link between the tw ruters. Hwever, the PPP link cannt be established. Based n the partial utput f the shw running-cnfig cmmand, what is the cause f the prblem? CCNA 5 Page 4

5 The usernames d nt match. The passwrds d nt match. The passwrds shuld be lnger than 8 characters. The interface IP addresses are in different subnets. 18. In which situatin wuld the use f PAP be preferable t the use f CHAP? when ruter resurces are limited when multilink PPP is used when plain text passwrds are needed t simulate lgin at the remte hst when a netwrk administratr prefers it because f ease f cnfiguratin 19. A netwrk administratr is evaluating authenticatin prtcls fr a PPP link. Which three factrs might lead t the selectin f CHAP ver PAP as the authenticatin prtcl? (Chse three.) establishes identities with a tw-way handshake uses a three-way authenticatin peridically during the sessin t recnfirm identities cntrl by the remte hst f the frequency and timing f lgin events transmits lgin infrmatin in encrypted frmat uses an unpredictable variable challenge value t prevent playback attacks makes authrized netwrk administratr interventin a requirement t establish each sessin 20. Refer t the exhibit. Based n the debug cmmand utput that is shwn, which statement is true f the peratin f PPP. CCNA 5 Page 5

6 CHAP authenticatin failed because f an unknwn hstname. A PPP sessin was successfully established. Bth PAP and CHAP authenticatin were attempted. The debug utput is frm ruter R Match the phases f establishing a PPP sessin in the crrect rder. (Nt all ptins are used.) 22. Match the PPP ptin with the crrect descriptin. (Nt all ptins are used.) 23. Match the steps t the PPP CHAP authenticatin prcess sequence. (Nt all ptins are used.) CCNA 5 Page 6

7 CCNA 5 Page 7