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Q51. What are two ways that packet fragmentation is handled differently between IPv6 and IPv4? (Choose two.) 

A. End hosts determine the path MTU for IPv6. 

B. End hosts determine the path MTU for IPv4. 

C. Packet fragmentation occurs at intermediate nodes for IPv4. 

D. Packet fragmentation occurs at intermediate nodes for IPv6. 

Answer: A,C 

Q52. Which command is used to load the rescue configuration? 

A. load override rescue 

B. rollback rescue 

C. load replace rescue-configuration 

D. rollback 49 

Answer: B 

Q53. You want to log in to the router and make a configuration change. 

After logging in as the root user, what is the next command you must enter? 

A. enable 

B. configure 

C. edit 

D. cli 

Answer: D 

Q54. When using keyboard shortcuts, which keystroke combination allows users to erase a single word to the left of the cursor? 

A. Ctrl + a 

B. Ctrl + e 

C. Ctrl + u 

D. Ctrl + w 

Answer: D 

Q55. At which layer of the OSI model does error checking occur with IPv6? 

A. Layer 2 

B. Layer 3 

C. Layer 4 

D. Layer 7 

Answer: C 

Q56. -- Exhibit --

[edit firewall family inet filter COS-CLASSIFIER] user@router# show 

term MANAGER { 

from { 

source-address { 

192.168.200.0/25; 

} 

destination-address { 

100.100.100.1/32; 

} 

} 

then { 

forwarding-class expedited-forwarding; 

accept; 

} 

} 

term ALL-OTHER-TRAFFIC { 

then accept; 

} 

 [edit interfaces ge-0/0/1] 

user@router# show 

unit 0 { 

familyinet { 

filter { 

input COS-CLASSIFIER; 

} 

address 192.168.200.1/24; 

} 

} 

-- Exhibit --

Referring to the exhibit, which type of classifier is being used in this CoS configuration? 

A. behavior aggregate 

B. policer 

C. multifield 

D. forwarding policy 

Answer: C 

Q57. Which command will display the active configuration? 

A. user@router> show configuration 

B. user@router# show 

C. user@router> show system configuration 

D. user@router> show system commit 

Answer: A 

Q58. Which user authentication method is supported by the Junos OS as a last resort alternative? 

A. TACACS+ 

B. RADIUS 

C. local user database 

D. enable password 

Answer: C 

Q59. Which statement is true about the forwarding plane? 

A. The forwarding plane is the intelligence of the platform. 

B. The forwarding plane is based on an X86 architecture. 

C. The forwarding plane maintains the routing tables, bridging table, and primary forwarding table. 

D. The forwarding plane implements policers, stateless firewall filters, and class of service. 

Answer: D 

Q60. Which operating system do Juniper Networks MX Series routers use? 

A. IOS 

B. MX-OS 

C. UNIX 

D. Junos OS 

Answer: D