Question 1mediummultiple choice
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Given the JSON snippet below, what is the value of hostname?
{
"device": {
"hostname": "R1",
"mgmt_ip": "192.0.2.10"
}
}A REST API query returns this JSON snippet:
{
"interface": {
"name": "GigabitEthernet1",
"admin-status": "up",
"oper-status": "down"
}
}What does this indicate?
A network automation script sends this HTTP request to a controller API:
POST /api/v1/devices
What does the POST method typically indicate in a RESTful API?
A controller API returns this data:
{
"device": {
"hostname": "Dist-1",
"interfaces": [
{"name": "Gig0/0", "status": "up"},
{"name": "Gig0/1", "status": "down"}
]
}
}Which statement is correct?
Goal: Read existing data only
Drag each automation or API concept from the left to its corresponding description on the right. Not all descriptions are used.
Concepts: - Northbound API - Southbound API - JSON - HTTPS
GET /api/v1/interfaces Headers: Accept: application/json Response: HTTP/1.1 401 Unauthorized
Request: GET /dna/intent/api/v1/network-device Authorization: Bearer <token>
POST /auth -> token received Subsequent GET /devices uses Authorization header
POST /dna/intent/api/v1/template-programmer/project HTTP/1.1 Host: controller.example.com X-Auth-Token: expired-token HTTP/1.1 401 Unauthorized
Snippet:
{
"hostname": "R1",
"enabled": true,
"vlans": [10,20,30]
}R1# show ntp status Clock is synchronized, stratum 16, reference is 0.0.0.0 nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10 ntp uptime is 100 minutes, resolution is 4000 msec reference time is D8C4E1C0.00000000 (12:34:56.000 UTC Mon Mar 15 2021) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec R1# show ntp associations address ref clock st when poll reach delay offset disp *~192.0.2.1 0.0.0.0 16 - 64 0 0.000 0.000 16000. * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
Router# show ntp status Clock is synchronized, stratum 16, reference is 0.0.0.0 nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10 reference time is 0.0.0.0 clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec Router# show ntp associations address ref clock st when poll reach delay offset disp *~192.168.1.10 .INIT. 16 - 64 0 0.0 0.00 16000. * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Router# show running-config | include ntp ntp server 192.168.1.10
R1#show ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.00000 Hz, actual freq is 250.00000 Hz, precision is 2**10
reference time is 0.0.0.0 (00:00:00.000 UTC Mon Jan 1 2000)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.00 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop)
R1#show ntp associations
address ref clock st when poll reach delay offset disp
*~0.0.0.0 0.0.0.0 16 - 64 0 0.00 0.00 16000.
* sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1#show logging
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
Console logging: level debugging, 0 messages logged
Monitor logging: level debugging, 0 messages logged
Buffer logging: level debugging, 0 messages logged
Trap logging: level critical, 0 messages logged
Logging to: 203.0.113.50 (udp port 514, audit disabled, link up)
R1#show running-config | section ntp
ntp server 192.0.2.10
!
R1#show running-config | section logging
logging host 203.0.113.50
!R1#show running-config | include ntp|logging logging host 192.0.2.100 logging trap debugging ! R1#show ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10 ntp uptime is 0 minutes, resolution 4000 ms reference time is 0x00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'NC' (No Connection) R1#show ntp associations address ref clock st when poll reach delay offset disp *~0.0.0.0 .INIT. 16 - 64 0 0.000 0.000 16000. * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1# show running-config | section ntp|logging
ntp server 198.51.100.10
logging host 203.0.113.5
logging trap debugging
!
R1# show ntp status
Clock is unsynchronized, stratum 16, no reference clock
R1# show ntp associations
address ref clock st when poll reach delay offset disp
*~198.51.100.10 .INIT. 16 - 1024 0 0.0 0.0 16000.
~ (synchronized), * (candidate), # (selected), + (peer), - (outlier)
R1# show logging
Syslog logging: enabled (0 messages dropped, 0 messages rate-limited)
Console logging: level debugging, 0 messages logged
Monitor logging: level debugging, 0 messages logged
Buffer logging: level debugging, 0 messages logged
Trap logging: level debugging, 0 message lines logged
Logging to 203.0.113.5 (udp port 514, audit disabled)
0 message lines loggedR1# show ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10
reference time is 0.0.0.0 (00:00:00.000 UTC Mon Jan 1 2000)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.00 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop)
R1# show run | section ntp
ntp server 203.0.113.10
R1# show run | include logging
logging host 198.51.100.20
no logging console
R1# show logging
Syslog logging: enabled (0 messages dropped, 0 messages rate-limited, 0 flushes)
Console logging: disabled
Monitor logging: level debugging, 0 messages logged
Buffer logging: level debugging, 0 messages logged
Trap logging: level informational, 0 messages logged
Logging to 198.51.100.20 (udp port 514, audit disabled,
link up)R1#show running-config | include ntp|logging ntp server 203.0.113.5 logging host 192.0.2.20 logging trap debugging ! R1#show ntp status Clock is unsynchronized, stratum 16, no reference clock R1#show ip interface brief | include Loopback0 Loopback0 10.0.0.1 YES manual up up R1#
R1#show running-config | section ntp|logging
ntp server 203.0.113.10
logging host 198.51.100.50
logging trap debugging
!
interface Loopback0
ip address 192.0.2.1 255.255.255.255
!
R1#show ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq: 250.0000 Hz, actual freq: 250.0000 Hz, precision: 2**10
reference time: 0.0.0.0 00:00:00.000 UTC Mon Jan 1 2000
clock offset: 0.0000 msec, root delay: 0.00 msec
root dispersion: 0.00 msec, peer dispersion: 0.00 msec
loopfilter state: 'CTRL' (Normal Controlled), drift: 0.00000000 s/s
system poll interval: 64, last update was 0 sec ago.
R1#show ntp associations
address ref clock st when poll reach delay offset disp
*~203.0.113.10 .INIT. 16 - 64 0 0.00 0.00 16000.
* sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1#show logging | include Logging
Syslog logging: enabled
Console logging: level debugging, 0 messages logged
Monitor logging: level debugging, 0 messages logged
Buffer logging: level debugging, 0 messages logged
Trap logging: level debugging, 0 messages logged
Logging to 198.51.100.50 (udp port 514, audit disabled, link up),
2 messages logged, level debuggingR1#show ntp status Clock is synchronized, stratum 16, reference is 127.127.7.1 nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10 reference time is D3A4B2C1.00000000 (00:00:00.000 UTC Mon Jan 1 2024) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal), drift is 0.000000000 s/s system poll interval is 64, last update was 0 sec ago. R1#show ntp associations address ref clock st when poll reach delay offset disp *~127.127.7.1 .LOCL. 16 25 64 377 0.000 0.000 0.000 * sys_peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R1#show running-config | include ntp|logging ntp server 203.0.113.10 logging host 198.51.100.20 logging trap warnings
R1#show ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**10 reference time is 0.0.0.0 (00:00:00.000 UTC Mon Jan 1 2000) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop) system poll interval is 64, last update was 0 sec ago. R1#show ntp associations address ref clock st when poll reach delay offset disp *~0.0.0.0 0.0.0.0 16 - 64 0 0.00 0.00 16000. * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R1#show run | section logging logging host 198.51.100.20 logging trap informational
R1#show running-config | include ntp|logging ntp server 192.0.2.1 logging host 203.0.113.10 logging trap debugging ! R1#show ntp status Clock is unsynchronized, stratum 16, no reference clock R1#show ntp associations address ref clock st when poll reach delay offset disp *~192.0.2.1 .INIT. 16 - 64 0 0.0 0.0 0.0 ~198.51.100.1 .INIT. 16 - 64 0 0.0 0.0 0.0
R1#show running-config | section snmp|flow Building configuration... Current configuration : 1234 bytes ! snmp-server community public RO snmp-server community private RW ! ! No trap or NetFlow configuration exists ! interface GigabitEthernet0/0 ip address 10.0.0.1 255.255.255.252 duplex auto speed auto media-type rj45 ! interface Loopback0 ip address 10.255.255.1 255.255.255.255 ! end
R1#show running-config | include snmp
Building configuration...
Current configuration : 1234 bytes
!
snmp-server community public RO
!
end
R1#show running-config | include flow
Building configuration...
Current configuration : 1234 bytes
!
!
end
R1#show ip flow export
Flow export v9 is disabled for main cache
Export source and destination details :
No Flow Export destinations configured
This is a main cache
R1#show ip cache flow
IP packet size distribution (0 total packets):
...
(output truncated – no flows captured)Current running-config (relevant sections): ! hostname R1 ! interface GigabitEthernet0/0/0 ip address 192.168.1.1 255.255.255.252 duplex auto speed auto media-type rj45 no shutdown ! interface Loopback0 ip address 10.0.0.1 255.255.255.255 ! ip route 0.0.0.0 0.0.0.0 192.168.1.2 ! snmp-server community CourseivaRO RO ! snmp-server enable traps snmp authentication linkdown linkup ! snmp-server host 192.0.2.100 version 2c CourseivaRO ! ! Note: SNMPv3 user 'monitor' is not yet configured. NetFlow not configured. !
R1#show running-config | section snmp|ip flow Building configuration... Current configuration : 1234 bytes ! ip flow-export source Loopback0 ip flow-export destination 203.0.113.100 2055 ! end R1#show ip cache flow IP packet size distribution (96 total packets): 1-32 64 96 128 160 192 224 256 288 320 352 384 416 448 480 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 ... (no flow records shown)
R1# show running-config | section snmp|ip flow ! ip flow-export destination 203.0.113.20 2055 ! snmp-server community public RO ! R1# show snmp Chassis: SNMPv2c Community strings: public (read-only) No SNMPv3 users configured. No trap configuration. R1# show ip cache flow IP packet size distribution: ... No NetFlow export information configured.
R1#show running-config | section snmp snmp-server community publicRW RO snmp-server location Datacenter snmp-server contact admin@example.com ! R1#show running-config | include ip flow i R1#show ip cache flow No flow cache configured.
R1#show running-config | section snmp|ip flow ! ! No SNMP or NetFlow configuration currently exists ! Only the following lines are present: ! snmp-server community public RO !
Current running-config of R1 (relevant sections): ! hostname R1 ! interface GigabitEthernet0/0 ip address 192.0.2.1 255.255.255.252 no shut ! interface GigabitEthernet0/1 ip address 198.51.100.1 255.255.255.0 no shut ! ip route 0.0.0.0 0.0.0.0 192.0.2.2 ! end
R1#show running-config | section snmp snmp-server community public RO snmp-server community private RW ! R1#show running-config | include flow-export no ip flow-export destination no ip flow-export version ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 10.0.0.1 YES NVRAM up up GigabitEthernet0/1 203.0.113.1 YES NVRAM up up Loopback0 192.0.2.1 YES NVRAM up up !
R1#show running-config | section snmp|flow
Building configuration...
!
ip flow-export source GigabitEthernet0/0
ip flow-export version 9
!
snmp-server community NetOpsRO RO
snmp-server enable traps snmp
snmp-server host 192.0.2.10 version 2c TrapComm
!
end
R1#show ip cache flow
IP packet size distribution (0 total packets):
(No flow data yet)
R1#R1#show running-config | section interface GigabitEthernet0/1 interface GigabitEthernet0/1 ip address 10.0.0.1 255.255.255.252 duplex auto speed auto media-type rj45 ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.0.2.1 YES NVRAM up up GigabitEthernet0/1 10.0.0.1 YES NVRAM up up Loopback0 203.0.113.1 YES NVRAM up up
R1# show running-config | section interface GigabitEthernet0/1 interface GigabitEthernet0/1 description Original description ip address 192.0.2.1 255.255.255.252 no shutdown ! R1# show ip interface brief Interface IP-Address Status Protocol GigabitEthernet0/0 203.0.113.1 up up GigabitEthernet0/1 192.0.2.1 up up Loopback0 10.1.1.1 up up
R1#show running-config | section interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.252 description Link to R2 no shutdown ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES NVRAM up up GigabitEthernet0/1 192.168.2.1 YES NVRAM up up R1#show restconf RESTCONF enabled on port 443
R1# show running-config | section interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 10.0.0.1 255.255.255.252 duplex auto speed auto media-type rj45 no shutdown ! R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 10.0.0.1 YES NVRAM up up GigabitEthernet0/1 unassigned YES NVRAM administratively down down Loopback0 10.0.0.11 YES NVRAM up up
R1#show running-config | section interface GigabitEthernet0/1 interface GigabitEthernet0/1 ip address 192.0.2.1 255.255.255.0 shutdown ! R1#show ip interface brief | include Gig0/1 GigabitEthernet0/1 192.0.2.1 YES manual administratively down down
R1#show running-config | section interface GigabitEthernet0/0
interface GigabitEthernet0/0
ip address 192.0.2.1 255.255.255.0
no shutdown
!
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 192.0.2.1 YES manual up up
RESTCONF base URI: https://192.0.2.1/restconf
Example GET URI (correct):
GET /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet0/0
Accept: application/yang-data+json
Example PATCH URI (correct):
PATCH /restconf/data/Cisco-IOS-XE-native:native/interface/GigabitEthernet=0/0
Content-Type: application/yang-data+json
Body: {"Cisco-IOS-XE-native:interface":{"GigabitEthernet":[{"name":"0/0","shutdown":true}]}}R1#show running-config | section interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.252 duplex auto speed auto ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES NVRAM up up
R1#show running-config | section interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0 description To_R2 no shutdown ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES NVRAM up up
R1#show running-config | section interface GigabitEthernet0/0/0
interface GigabitEthernet0/0/0
ip address 198.51.100.1 255.255.255.0
description Link-to-R2
no shutdown
!
R1#show ip interface brief | include GigabitEthernet0/0/0
GigabitEthernet0/0/0 198.51.100.1 YES manual up up
RESTCONF base URI: https://198.51.100.1:443/restconf
Curl attempt (GET) — correct:
curl -k -u admin:cisco -H "Accept: application/yang-data+json" https://198.51.100.1/restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet0%2F0%2F0
Curl attempt (PATCH) — incorrect (wrong YANG path):
curl -k -u admin:cisco -X PATCH -H "Content-Type: application/yang-data+json" -d '{"Cisco-IOS-XE-native:description":"WAN-Link-to-R2"}' https://198.51.100.1/restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet0%2F0%2F0/description
Response to PATCH above: 400 Bad Request - "YANG path does not match data: expected 'Cisco-IOS-XE-native:interface' at root"
Curl attempt (PATCH) — correct:
curl -k -u admin:cisco -X PATCH -H "Content-Type: application/yang-data+json" -d '{"Cisco-IOS-XE-native:description":"WAN-Link-to-R2"}' https://198.51.100.1/restconf/data/Cisco-IOS-XE-native:native/interface/GigabitEthernet=GigabitEthernet0%2F0%2F0/description
Response to correct PATCH: 204 No ContentDrag a concept onto its matching description — or click a concept then click the description.
Tool employing a pull mechanism for node configuration using a proprietary DSL
Framework that uses Ruby-coded recipes within a client-server deployment model
Solution providing agentless orchestration via SSH and YAML-written playbooks
High-level programming language utilized for scripting network automation tasks
Web-based interface for programmatic device management using HTTP methods