思科认证考试
Cisco NX-OS Software supports SNMPv1， SNMPv2c， and SNMPv3. Both SNMPv1 and SNMPv2c use a community-based form of security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting frames over the network. Which security f
题目
Cisco NX-OS Software supports SNMPv1， SNMPv2c， and SNMPv3. Both SNMPv1 and SNMPv2c use a community-based form of security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting frames over the network. Which security features are provided in Cisco NX-OS SNMPv3？ （）
- A、 encryption—scrambles the packet contents to prevent them from being seen by unauthorized sources
- B、 password—a password （community string） sent in clear text between a manager and agent for added protection
- C、 authentication—determines that the message is from a valid source
- D、 message integrity—ensures that a packet has not been tampered with while it was in transit
- E、 user—to determine if user authentication is used instead of community strings
参考答案和解析
相似问题和答案
第1题：
With Cisco NX-OS on a Cisco Nexus platform， which command shows memory usage， total processes， and CPU state？（）
- A、 show memory detailed
- B、 show process cpu sorted
- C、 show system resources
- D、 show hardware capacity
正确答案:C
第2题：
If you have Cisco integrated services router and need to upgrade the Cisco IOS image,which kind of Cisco Support services do you need?（）
- A、Cisco SMARTNet onsite
- B、Cisco TAC
- C、Advanced Hardware Replacement
- D、Software Support
正确答案:D
第3题：
After making some network changes you power off and then power on your Cisco router named VE1. What sequence of events occurs when VE1 is powered up?
A. Perform. POST, locate configuration statements, apply configuration statements, locate Cisco IOS software, and load Cisco IOS software.
B. Locate Cisco IOS software, load Cisco IOS software, locate configuration statements, apply configuration statements, and perform. POST.
C. Test software routines, POST, load configuration files, load Cisco IOS software, test Cisco IOS software.
D. Perrform. POST, locate Cisco IOS software, load the Cisco IOS software, locate configuration statements, and apply configuration statements.
E. Load and test IOS, load configuration files, test software routines, POST.
F. None of the above
D 解析：Explanation:
Upon initial start up, Cisco routers perform. the following steps in order:
1. The router performs a power-on self-test (POST) to discover and verify the hardware.
2. The router loads and runs bootstrap code from ROM.
3. The router finds the IOS or other software and loads it.
4. The router finds the configuration file and loads it into running config.
第4题：
What are two security features of the Cisco Secure Router 500 Series？ （）
- A、Cisco Intrusion Prevention System
- B、Cisco IOS Software Firewall
- C、Cisco IOS Easy VPN
- D、Cisco Unified Wireless Networking
- E、Cisco ASA Hardware Firewall
正确答案:A,B
第5题：
Which statement best describes ACL configuration using configuration session mode on Cisco Nexus switches？（）
- A、 The verify command will validate commands entered for syntax errors.
- B、 The save command will save the commands entered to the startup configuration.
- C、 The network administrator can perform a dry-run ACL configuration by verifying the configuration against the hardware and software resources available before applying it.
- D、 Configuration sessions can be saved and resumed at any time， even after upgrading NX-OS Software on the switch with ISSU.
- E、 Configuration sessions are global for all VDCs on the Nexus 7000.
正确答案:C
第6题：
Which statement describes the XML management interface in Cisco NX-OS Software？（）
- A、The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session copy-config delete-config and edit-config
- B、The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session copy-config edit-config and kill-session
- C、NX-OS Software supports up to a maximum of 16 concurrent XML sessions
- D、Only show commands are supported via the XML management interface in NX-OS Software
- E、The NX-OS implementation of the XML-based NETCONF requires SSH to be used for communication with the device
正确答案:E
第7题：
If XYZ LTD needs to upgrade the Cisco IOS Software of a Cisco Router, Where is the best place to download the upgrade image file from?（）
- A、The best option is to download it from the Cisco TAC website
- B、The best option is to download it from the Cisco.Com Software support site
- C、The best option is to download it form the Cisco Advanced Services website
- D、The best option is to download it from the TFTP site on Cisco.com
正确答案:B
第8题：
By default， what type of SSH server key is generated by Cisco NX-OS Software？（）
- A、 DSA key generated with 512 bits
- B、 RSA key generated with 768 bits
- C、 RSA key generated with 1024 bits
- D、 DSA key generated with 1024 bits
- E、 RSA key generated with 2048 bits
正确答案:C
第9题：
Which two management-software applications can you use to manage the Cisco Catalyst Express 500 Series Switches?（）
- A、Cisco Network Assistant
- B、Cisco Security Device Manager
- C、Cisco Device Manager
- D、Cisco Adaptive Security Device Manager
正确答案:A,C
第10题：
Which three statements describe user authentication in Cisco DCNM-LAN？ （）
- A、 Cisco DCNM-LAN server users are local to the Cisco DCNM-LAN server. Creating， changing， and removing Cisco DCNM-LAN server users has no effect on user accounts on managed devices.
- B、 A Cisco DCNM-LAN server user that has Administrator privileges can push out changes to managed devices even if the Cisco NX-OS role that is used on the discovered device has the network operator role.
- C、 Cisco DCNM-LAN user roles restrict the ability of users to make changes to Cisco DCNM-LAN server settings. Cisco NX-OS user roles enforce read/write privileges on the discovered devices.
- D、 Cisco DCNM-LAN allows you to configure unique credentials for each discovered device or use default credentials when you do not configure unique credentials for a device.
- E、 Cisco DCNM-LAN can use AAA servers to authenticate users. Only TACACS servers are supported.
正确答案:A,C,D