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CCNA DC FAQ: Installing and Operating Nexus Switches

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CCNA DC FAQ: Installing and Operating Nexus Switches


Figure: Cisco 5500 Nexus Switch Series

Q1. In what modes can you execute the command show mac address-table?
a. EXEC command mode.
b. Subinterface configuration command mode.
c. Global configuration mode.
d. All answers are correct.

Answer: D. NX-OS enables you to execute EXEC command from any level of the command structure as long as your role has the privileges, too.

Q2. In which user role can you issue the command reload to reboot the switch?
a. Network-operator
b. Network-admin
c. Test user
d. Interface user

Answer: B. Network-admin is the only role listed that enables you to reload the switch.

Q3. Which of the following is a difference between Telnet and SSH as supported by a Cisco switch?
a. SSH encrypts the passwords used at login, but not other traffic; Telnet encrypts nothing.
b. SSH encrypts all data exchange, including login passwords; Telnet encrypts nothing.
c. Telnet is used from Microsoft operating systems, and SSH is used from UNIX and Linux operating systems.
d. Telnet encrypts only password exchanges; SSH encrypts all data exchanges.

Answer: B. SSH encrypts all passwords and data exchanges; telnet does not.

Q4. What type of switch memory is used to store the running configuration?
a. RAM
b. ROM
c. Flash
d. NVRAM
e. Bubble

Answer: A. Volatile random-access memory (VRAM) located on a supervisor module is used for temporary or pending changes.

Q5. What command copies the configuration from RAM into NVRAM?
a. copy running-config tftp
b. copy tftp running-config
c. copy running-config start-up-config
d. copy start-up-config running-config
e. copy startup-config running-config
f. copy running-config startup-config

Answer: F. Nonvolatile random-access memory (NVRAM) located on a supervisor module is used for storing the startup-configuration file.

Q6. A switch user is currently in console line configuration mode. Which of the following would place the user in EXEC mode? (Choose two answers.)
a. Using the exit command once
b. Using the end command once
c. Pressing the Ctrl+Z key sequence once
d. Using the quit command

Answer: A and B. In configuration mode, you are one mode above EXEC mode. Using exit will bring you down one mode level, and end will always return you to EXEC mode.