JN0-221 Online Practice Questions and Answers

Which Python code block is an example of a context manager?

A. while True: device – Device(host-“vmx-1”, user-“lab”, passwd-“lab123”) ...

B. try: device – Device(host-“vmx-1”, user-“lab”, passwd-“lab123”)

...

except:

print(“Unable to connect to the vMX1”)

C. with Device(host=”vmx-1”, user=”lab”, passwd=”lab123”) as device: ...

D. for host in [“vmx-1”, “vmx-2”]: device – Device(host-host, user-“lab”, passwd-“lab123”) ...

Click the Exhibit button.

>>> print(hardware_count)

{`MX960':10, `SRX300': 22, `QFX5100': 4}

Referring to the exhibit, what is the correct method to retrieve the value associated only with "MX960"?

A. hardware_count.keys()

B. hardware_count.values()

C. hardware_count[0]

D. hardware_count["MX960"]

Click the Exhibit button.

{ "interface": "ge-0/0/1.0" }

Which type of data is contained in the key of the JSON object shown in the exhibit?

A. string

B. name

C. integer

D. interface

Click the Exhibit button.

Referring to the exhibit, what is the output from the print(x) line?

A. [`b', `c']

B. [`b', `c', `d']

C. [`a', `b', `c']

D. [`a', `b']

What is an example of correct XML syntax?

A. vMX1

B. vMX1

C. vMX1

D. vMX1

In Python, my_list = [1, 2, 3] is an example of which type of operation?

A. membership

B. comparison

C. assignment

D. bitwise

Click the Exhibit button.

You need to translate the configuration shown in the exhibit into a PyEZ RPC call. Which line shows the proper PyEZ syntax?

A. dev.rpc.get_route_information(table="inet.0")

B. dev.rpc.get-route-information(table="inet.0")

C. dev.rpc.get_route_information:table="inet.0"

D. dev.rpc.get-route-information:table="inet.0"

What are three elements of Infrastructure as Code (IaC)? (Choose three.)

A. code review

B. integration

C. flow

D. feedback

E. version control

Which API does the Junos CLI use to modify the configuration database?

A. REST API

B. XML API

C. JET API

D. RPC API

Which two tools should be used to test REST APIs? (Choose two.)

A. curl

B. Puppet

C. Chef

D. Postman