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642-503 考试是 Cisco 公司的 Securing Networks with Cisco Routers and Switches 认证考试官方代号，Examsoon 的 642-503 权威考试学习资料软件包含Cisco 认证主要知识点，Examsoon 保证第一次参加 642-503 考试的考生即可顺利通过，否则承诺免费更新！
　
　
Exam : Cisco 642-503
Title : Cisco(r) Securing Networks with Cisco Routers and Switches


1. Refer to the exhibit. Why is the Total Active Signatures count zero?
A. The 128MB.sdf file in flash is corrupted.
B. IPS is in fail-open mode.
C. IPS is in fail-closed mode.
D. IPS has not been enabled on an interface yet.
E. The flash:/128MB.sdf needs to be merged with the built-in signatures first.
Answer: D

2. Refer to the exhibit. Why is the Cisco IOS Firewall authentication proxy not working?
A. The aaa authentication auth-proxy default group tacacs+ command is missing in the configuration.
B. The router local username and password database is not configured.
C. Cisco IOS authentication proxy only supports RADIUS and not TACACS+.
D. HTTP server and AAA authentication for the HTTP server is not enabled.
E. The AAA method lists used for authentication proxy should be named "pxy" rather than "default" to match the authentication proxy rule name.
Answer: D

3. Refer to the exhibit. What additional configuration is required for the Cisco IOS Firewall to reset the TCP connection if any peer-to-peer, tunneling, or instant messaging traffic is detected over HTTP?
A. class-map configuration for matching peer-to-peer, tunneling, and instant messaging traffic over HTTP, and a policy map specifying the reset action
B. the port-misuse default action reset alarm command in the HTTP application firewall policy configuration
C. the PAM configuration for mapping the peer-to-peer, tunneling, and instant messaging TCP ports to the HTTP application
D. the ip inspect name firewall im, ip inspect name firewall p2p, and ip inspect name firewall tunnel commands
E. the service default action reset command in the HTTP application firewall policy configuration
Answer: B

4. Which two statements are true regarding classic Cisco IOS Firewall configurations? (Choose two.)
A. You can apply the IP inspection rule in the inbound direction on the trusted interface.
B. You can apply the IP inspection rule in the outbound direction on the untrusted interface.
C. For temporary openings to be created dynamically by Cisco IOS Firewall, the access list for the returning traffic must be a standard ACL.
D. For temporary openings to be created dynamically by Cisco IOS Firewall, you must apply the IP inspection rule to the trusted interface.
E. For temporary openings to be created dynamically by Cisco IOS Firewall, the inbound access list on the trusted interface must be an extended ACL.
Answer: AB

5. Which three configurations are required to enable the Cisco IOS Firewall to inspect a user-defined application which uses TCP ports 8000 and 8001? (Choose three.)
A. access-list 101 permit tcp any any eq 8000
access-list 101 permit tcp any any eq 8001
class-map user-10
match access-group 101
B. policy-map user-10
class user-10
inspect
C. ip port-map user-10 port tcp 8000 8001 description "TEST PROTOCOL"
D. ip inspect name test appfw user-10
E. ip inspect name test user-10
F. int {type|number}
　ip inpsect name test in
Answer: CEF

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