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
Which type of physical connector does a Gigabit Ethernet port typically use?
- A . RJ-9
- B . RJ-45
- C . DB-25
- D . RJ-11
Which two pairs of LAN Ethernet devices use an RJ-45 straight-through cable? (Choose two.)
- A . switch-to-switch
- B . switch-to-router
- C . switch-to-hub
- D . router-to-router
- E . switch-to-server
Which two features are associated with single-mode fiber-optic cable? (Choose two.)
- A . consists of a single strand of glass fiber
- B . has higher attenuation that multimode fiber
- C . carries a higher bandwidth that multimode fiber
- D . costs less than multimode fiber
- E . operates over less distance than multimode fiber
Refer to the exhibit.

Which two statements about the hardware components are true? (Choose two.)
- A . 2 is an RJ-45 to USB Type A console cable.
- B . 3 is a USB Type A port.
- C . 3 is a USB 5-pin mini USB Type B port.
- D . 1 is a USB Type A port.
- E . 2 is a USB 5-pin mini USB Type B to USB Type A console cable.
Which type of transceiver module is used for 40 Gigabit Ethernet connectivity?
- A . SFP+
- B . GBIC
- C . QSFP+
- D . XFP
What is the line speed of a DS0 in North America?
- A . 16 kbps
- B . 32 kbps
- C . 64 kbps
- D . 128 kbps
Which two ports on a laptop are used to gain console access to a Cisco switch? (Choose two.)
- A . DB-9
- B . USB
- C . DVI
- D . RJ-11
- E . RJ-45 Ethernet
Which two statements about a SmartJack are true? (Choose two.)
- A . It provides signal conversion.
- B . It acts as a concentration point for dial-in and dial-out connections.
- C . It operates at Layer 2 of the OSI model.
- D . It provides channel testing.
- E . It regenerates the signal to compensate for signal degradation from line transmission.
The colored wires at one end of a cable are in reverse sequence to the colored wires at the other end of the cable.
Which cable does this configuration describe?
- A . rolled
- B . crossover
- C . coaxial
- D . straight-through
Which Cisco CPAK 100GBASE module supports Multimode Fiber cable?
- A . Cisco CPAK-100G-CWDM4
- B . Cisco CPAK-100G-LR4
- C . Cisco CPAK-100G-ER4L
- D . Cisco CPAK-100G-SR4
