[Nov.-2016-New]Braindump2go 640-911 PDF Questions and Answers Instant Download[NQ21-NQ30]
2016/11 New CCNA Data Center 640-911 DCICN: Introducing Cisco Data Center Networking Exam Questions Updated Today!
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QUESTION 21
What is the function of the Tab key on the Cisco Nexus Operating System command-line interface?
A. redisplays the current command line
B. deletes all characters from the cursor to the end of the command line
C. clears the terminal screen
D. completes a partially entered command if enough characters are present
E. moves the cursor one word to the right
Answer: D
Explanation:
“Completes the word for you after entering the first characters of the word, and then pressing the Tab key. All options that match are presented.”
http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_1/nx-os/fundamentals/configuration/guide/Cisco_Nexus_7000_Series_NX-OS_Fundamentals_Configuration_Guide__Release_4.1_chapter4.html
QUESTION 22
Where does Cisco Nexus Operating System store the running configuration file?
A. RAM
B. flash
C. bootflash
D. volatile
E. NVRAM
Answer: A
Explanation:
“The “running-config” file is stored in RAM.”
http://www.omnisecu.com/cisco-certified-network-associate-ccna/cisco-router-configuration-files.php
QUESTION 23
Where does Cisco Nexus Operating System store the startup configuration file?
A. RAM
B. flash
C. bootflash
D. volatile
E. NVRAM
Answer: E
Explanation:
“A persistent copy of Cisco Router configuration file is called as “startup-config” file.
The “startup- config” file is kept in NVRAM and the contents of the “startup-config” file are retained after a reboot.”
http://www.omnisecu.com/cisco-certified-network-associate-ccna/cisco-router-configuration-files.php
QUESTION 24
Which two commands would you use to erase the Cisco Nexus Operation System configuration and return the switch to factory defaults? (Choose two.)
A. nexus# write erase boot
B. nexus# erase configuration
C. nexus# erase running-configuration
D. nexus# erase startup-configuration
E. nexus# reboot
F. nexus# reload
G. nexus# shutdown
Answer: AF
QUESTION 25
What is the minimum required command to enter global configuration mode on a Cisco Nexus switch?
A. nexus# con
B. nexus# configure
C. nexus# configure global
D. nexus# configure terminal
Answer: A
Explanation:
Example:
NX# con
Enter configuration commands, one per line. End with CNTL/Z.
NX(config)#
PS. in IOS minimum “conf t”
QUESTION 26
Which option would you use to exit the Cisco Nexus Operating System interface configuration mode and return to the exec prompt?
A. nexus(config-if)#Ctrl-C
nexus#
B. nexus(config-if)#Ctrl-Z
nexus#
C. nexus(config-if)#Ctrl-E
nexus#
D. nexus(config-if)#exit
nexus#
Answer: B
Explanation:
“Ctrl-Z Ends a configuration session, and returns you to EXEC mode. When used at the end of a command line in which a valid command has been typed, the resulting configuration is first added to the running configuration file.” http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_1/nx-os/fundamentals/configuration/guide/Cisco_Nexus_7000_Series_NX-OS_Fundamentals_Configuration_Guide__Release_4.1_chapter4.html
PS. “exit” return to global config only
QUESTION 27
What is the correct format of an access control list on a Cisco Nexus switch to deny unencrypted Web traffic from any source to destination host 10.10.1.110?
A. N5K-A(config)#ip access-list 101
N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80
B. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80
C. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80
N5K-A(config)#access-list 101permit ip any any
D. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80
N5K-A(config-acl)# permit ip any any
Answer: D
QUESTION 28
What is the correct format of an access control list on a Cisco Nexus switch to deny FTP traffic from any source to destination host 10.10.1.110?
A. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq ftp
B. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq ftp
C. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq ftp
N5K-A(config)#access-list 101denyip any any
D. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# denyudp any host 10.10.1.110 eq 21
N5K-A(config-acl)# permit ip any any
E. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 21
N5K-A(config-acl)# permit ip any any
Answer: E
QUESTION 29
What is the correct format of an access control list on a Cisco Nexus switch to deny hosts on the 172.16.1.0/21 network from accessing HTTP proxy servers listening on port 8080?
A. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp 172.16.1.0 0.0.7.255 any eq 8080
N5K-A(config-acl)# permit ip any any
B. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp any 172.16.1.0 255.255.248.0 eq 8080
N5K-A(config-acl)# permit ip any any
C. N5K-A(config)#access-list 101 deny tcp172.16.1.0 0.0.15.255 eq 8080
D. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# deny tcp any host 172.16.1.0/21 eq 8080
Answer: A
QUESTION 30
What is the correct format of an access control list on a Cisco Nexus switch to only permit unencrypted Web traffic from the 172.16.1.0/25 network to destination host 10.10.1.110?
A. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# permit tcp host 172.16.1.0/25 any eq 80
B. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# permit tcp 172.16.1.0 255.255.255.128 any eq 80
C. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# permit tcp 172.16.1.0/25 any eq 80
D. N5K-A(config)#access-list 101 permit tcp 172.16.1.0/25 0.0.0.128 eq 80
E. N5K-A(config)# ip access-list 101
N5K-A(config-acl)# permit tcp any 172.16.1.0 255.255.248.0 eq 80
Answer: C
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