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单项选择题

Click the Exhibit button.
In the exhibit, what is the purpose of this OSPF configuration?（）

A. The router sends the file debugOSPF (containing hellos sent and LSA updates) to the syslog server.
B. The router traces both OSPF hellos sent and LSA updates, and stores the results in the debugOSPFfile.
C. The router traces both OSPF hellos sent and LSA updates, and sends the results to the syslog process with the debugOSPF facility.
D. The router traces all OSPF operations, stores the results in the debugOSPF file, and marks both hellos sent and LSAupdates in the file with a special flag.

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单项选择题Interface ge-0 0 2.0 of your router is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17 24. A host with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. This host isattached to the ge-0 0 0.0 interface of your router. You must use interface-based static NAT to make the HTTP service on the host reachable from the Internet. On which IP address and TCP port can Internet hosts reach the HTTP service?（）

A. IP address 10.10.10.1 and TCP port 8080
B. IP address 71.33.252.17 and TCP port 80
C. IP address 71.33.251.19 and TCP port 80
D. IP address 71.33.252.19 and TCP port 8080

多项选择题Which three security concerns can be addressed by a tunnel mode IPSec VPN secured by AH?（）(Choose three.)

A. data integrity
B. data confidentiality
C. data authentication
D. outer IP header confidentiality
E. outer IP header authentication

多项选择题Users can define policy to control traffic flow between which two components? （）(Choose two.)

A. from a zone to the router itself
B. from a zone to the same zone
C. from a zone to a different zone
D. from one interface to another interface

单项选择题You are not able to telnet to the interface IP of your JUNOS software with enhanced services devicefrom a PC on the same subnet. What is causing the problem? （）

A. Telnet is not being permitted by self policy.
B. Telnet is not being permitted by security policy.
C. Telnet is not allowed because it is not considered secure.
D. Telnet is not enabled as a host-inbound service on the zone.

多项选择题Which two statements regarding asymmetric key encryption are true?（） (Choose two.)

A. The same key is used for encryption and decryption.
B. It is commonly used to create digital certificate signatures.
C. It uses two keys: one for encryption and a different key for decryption.
D. An attacker can decrypt data if the attacker captures the key used for encryption.