Cisco 100-490 Supporting Cisco Routing and Switching Network Devices v3.0 Online Training
Cisco 100-490 Online Training
The questions for 100-490 were last updated at Oct 23,2025.
- Exam Code: 100-490
- Exam Name: Supporting Cisco Routing and Switching Network Devices v3.0
- Certification Provider: Cisco
- Latest update: Oct 23,2025
Question #21
The pins on an RJ-45 cable plug are numbered from 1 through 8. When the metal pins of the plug are facing toward you, pin 1 is the leftmost pin.
Which two sets of pins are looped on an RJ-45 56K loopback plug? (Choose two.)
- A . pins 2 and 7
- B . pins 2 and 8
- C . pins 2 and 5
- D . pins 1 and 7
- E . pins 1 and 4
Question #22
Question #23
Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)
- A . Cisco Nexus 34180YC
- B . Cisco Nexus 34200YC-SM
- C . Cisco Nexus 3432D-S
- D . Cisco Nexus 3408-S
- E . Cisco Nexus 3464C
Question #24
Which type of memory stores the configuration of a router or switch by default?
- A . RAM
- B . ROM
- C . NVRAM
- D . flash
Question #25
Which two commands identify the serial number of a Cisco router? (Choose two.)
- A . show run
- B . show inventory
- C . show environment
- D . show version
- E . show archive
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