Quản trị mạng Chapter3

6 227 0
Quản trị mạng  Chapter3

Đang tải... (xem toàn văn)

Thông tin tài liệu

Quản trị mạng

Dao Xuan Hung - Take Exam Exam questions Time remaining: 00: 48: 10 1 . Callback was designed by Cisco to aid in: authentication configuration negotiation bill consolidation 2 . Which one of the following is true regarding Multilink PPP? Multilink PPP can use a secondary link if the primary link is down Multilink PPP can define interesting and uninteresting traffic Multilink PPP will always use the secondary link instead of the primary link, if possible Multilink PPP is unable to use a secondary link 3 . What is the PPP control protocol for IP? LCP NCP LAPB IPCP 4 . What command would you use for PPP callback? ppp callback start ppp callback queue ppp callback timeout ppp callback request 5 . Which command shows the result of authentication? show ppp negotiation debug ppp negotiation debug ppp authentication show ppp authentication 6 . Which two of the following are used to verify and troubleshoot a PPP session? show interfaces show PPP debug PPP negotiation debug PPP session 7 . What are three PPP LCP features? Authentication Compression Multilink Multipoint 8 . What are two reasons to use PPP callback? Security Cost Speed Accuracy 9 . Multilink PPP (MPPP) adds which size headers to the packet fragments for sequencing and so that the fragments can be reconstructed? Choose three. 1 byte 2 bytes 4 bytes 6 bytes 8 bytes 10 . What is a reason that CHAP authentication is preferred over PAP authentication? CHAP encrypts the data and uses the MD5 (Message Digest 5) hashing function CHAP encrypts the password and uses the MD5 (Message Digest 5) hashing function CHAP makes sure the remote device is spoofing by sending a challenge to the remote device CHAP does not use up bandwidth because it does not make use of repeated challenges 11 . Which command gives the details for the negotiated parameters during PPP setup? show ppp negotiation debug ppp negotiation debug ppp authentication debug dialer 12 . What are four PPP options that are negotiated through the LCP? Callback Multilink PPP Accounting Compression Authorization Authentication Rate adaptation 13 . What is the hexadecimal frame flag value for PPP? 6A 7D 7E 7F 14 . PPP uses which of the following network protocols for negotiation prior to a command being established? IPCP PAP LCP TCP 15 . What are the four main types of compression that PPP supports? Compressor Stacker Predictor LZ Compression MPPC TCP Header 16 . Which of the following ITU standards are correct: Choose three. V.34 – 28.8 Kbps V.34 – 14.4 Kbps V.34 annex 1201H – 33.6 Kbps V.90 – 53 Kbps V.90 – 56 Kbps 17 . By which two methods can callers be authenticated using PPP? Message digest key Authentication key PAP CHAP Compression 18 . Given the following debug output, which two statements are true? The user is authenticating with the privileged mode password "NAS 1". This is a connection attempt to an async port. The connection is established on serial interface 3/0. The client is attempting to setup a Serial Line Internet Protocol connection. The user is authenticating using CHAP. 19 . What is true regarding Multilink PPP? Does not fragment the packets and spreads the packets over the separate links Does not fragment the packets and does not spread the packets over the separate links Fragments the packets and spreads the fragments over the separate links Fragments the packets and does not spread the fragments over the separate links 20 . Which of the following does PPP LCP allow for? Choose three. Callback Multipoint Compression Multilink 21 . One authentication method (PAP, CHAP, MS-CHAP, None) must be common for each side of the link or the link will fail to be established. True False 22 . Which of the following are LCP options? Choose four. authentication callback compression multipoint multilink 23 . What are two advantages of Multilink PPP (MLP)? Supports strong encryption types Multiple physical interfaces can be cascaded Increased bandwidth Multiple routes for redundancy 24 . Which two of the following statements are correct regarding the Multilink PPP (MP) protocol? MP provides load balancing over multiple WAN links. MP can identify bundles only through the authenticated name. MP is a negotiated option only during the LCP phase of PPP. For MP to bind links, configuring AAA authentication is required. 25 . Regarding Multilink PPP (MPPP), the Cisco 700 series router use _____ byte headers, whereas the Cisco IOS uses ______ byte headers. 2,6 2,4 4,8 2,8 26 . What is the difference between multipoint and multilink? Choose two. Multipoint is a single subinterface used to establish multiple PVC connections to multiple physical locations or subinterfaces on a remote router Multilink allows packets to be fragmented and sent at the same time over multiple multipoint links at the same time Multipoint is multiple subinterfaces used to establish multiple PVC connections to multiple physical locations or subinterfaces on a remote router Multilink allows packets to be unfragmented and sent at the same time over multiple multipoint links at the same time 27 . What are three PPP authentication methods? PAP CHAP PPP MS-CHAP 28 . What is the main advantage of CHAP over PAP? PAP has a higher overhead If authentication fails at any time PAP drops the call It sends hashed passwords CHAP authentication takes fewer steps Showing page 1 of 1 : 1Go! © 2004 HanoiCTT. All rights reserved. 123doc.vn

Ngày đăng: 13/11/2012, 17:19

Từ khóa liên quan

Tài liệu cùng người dùng

  • Đang cập nhật ...

Tài liệu liên quan