Which two statements about using the CHAP authentication mechanism in a PPP link are true?()A.CHAP uses a two-way handshakeB.CHAP authentication periodically occurs after link establishmentC.CHAP has no protection from playback attacksD.CHAP authenticatio

第1题：

第2题：

which command is used to enable CHAP authentication whit PAP as the fallback method on a serial interface?（）

• A、(config-if)#authentication ppp chap fallback ppp
• B、(config-if)#authentication ppp chap pap
• C、(config-if)#ppp authentication chap pap
• D、(config-if)#ppp authentication chap fallback ppp

正确答案:C

第3题：

Which three statements about NetFlow are true？ （）

• A、LCP is used for PPP over ATM （PPPoA） setup.
• B、LCP is used for PPP over Ethernet （PPPoE） setup.
• C、LCP is used for PPP over Ethernet （PPPoPR） setup.
• D、LCP is used for PPP CHAP authentication.
• E、LCP is used for basic PPP link setup and operation.

正确答案:A,B,E

第4题：

Which profile configurations allows either PAP or CHAP to be used for authentication?（）

• A、ppp authentication chap pap
• B、pppoe authentication chap pap
• C、ppp authentication chap ppp authentication pap
• D、pppoe authentication chap pppoe authentication pap

正确答案:A

第5题：

Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）

• A、CHAP uses a two-way handshake
• B、CHAP authentication periodically occurs after link establishment
• C、CHAP has no protection from playback attacks
• D、CHAP authentication is performed only upon link establishment
• E、CHAP uses a three-way handshake
• F、CHAP authentication passwords are sent in plaintext

正确答案:B,E

第6题：

Which statement about the Link Control Protocol （LCP） is true？（）

• A、LCP is used for basic PPP link setup and operation.
• B、LCP is used for PPP CHAP authentication.
• C、LCP is used for PPP over ATM （PPPoA） setup.
• D、LCP is used for PPP over Ethernet （PPPoE） setup.
• E、LCP is used for PPP over Frame Relay （PPPoFR） setup

正确答案:A

第7题：

All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?（）

• A、show CHAP authentication
• B、show interface serial 0
• C、debug PPP authentication
• D、debug CHAP authentication
• E、show PPP authentication CHAP

正确答案:C

第8题：

Which command displays the CHAP authentication process as it occurs between two routers?（）

• A、debug authentication
• B、debug chap ppp
• C、debug chap authentication
• D、debug ppp authentication

正确答案:D

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第14题：

Which two statements about the open and shared key wireless-authentication methods are true？ （）

• A、 Shared key authentication is considered more secure than open authentication.
• B、 Shared key authentication is considered less secure than open authentication.
• C、 If the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data.
• D、 If the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data.
• E、 If the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data.

正确答案:B,D

第15题：

Which two statements about the Wired Equivalent Privacy （WEP） encryption mechanism are true？ （）

• A、the two methods of authentication using the WEP encryption are open and shared key
• B、the 802.11 standard defines WEP security using 128-bit keys
• C、WEP can provide stronger authentication through the use of LEAP， PEAP， or EAP-FAST
• D、WEP is a scalable encryption solution that uses static keys for authentication
• E、WEP security provides only one-way authentication
• F、WEPv2 offers improved encryption by replacing the RC4 encryption mechanism with the AES （symmetric block cipher） mechanism

正确答案:A,E

第16题：

All WAN links inside the ABC University network use PPP with CHAP for authentication security. Which command will display the CHAP authentication process as it occur between two routers in the network?（）

• A、show chap authentication
• B、show interface serial0
• C、debug ppp authentication
• D、debug chap authentication
• E、show ppp authentication chap

正确答案:C

第17题：

You are an administrator of a network that uses PPP for CHAP authentication over ever WAN link. What command would you enter to display the CHAP authentication as it occurs in real time?（）

• A、show ppp authentication
• B、debug PAP authentication
• C、debug PPP authentication
• D、show interface serial0
• E、show CHAP authentication

正确答案:C

第18题：

which command is used to enable CHAP authentication whit PAP as the fallback method on a serialinterface?（）

• A、(config-if)#authentication ppp chap fallback ppp
• B、(config-if)#authentication ppp chap pap
• C、(config-if)#ppp authentication chap pap
• D、(config-if)#ppp authentication chap fallback ppp

正确答案:C

第19题：

Which two statements about the open and shared key wireless-authentication methods are true？（）

• A、shared key authentication is considered more secure than open authentication
• B、shared key authentication is considered less secure than open authentication
• C、if the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data
• D、if the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data
• E、if the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data

正确答案:B,D

第20题：

Which two statements are true about using the isUserInRole method to implement security in a Java EEapplication？（）

• A、It can be invoked only from the doGet or doPost methods.
• B、It can be used independently of the getRemoteUser method.
• C、Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
• D、Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.

正确答案:B,C

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