640-692 Free Practice Test

Refer to the exhibit.

Why is flash memory erased prior to upgrading the IOS image from the TFTP server?

1. A. The router cannot verify that the Cisco IOS image currently in flash is valid.
2. B. Flash memory on Cisco routers can contain only a single IOS image.
3. C. Erasing current flash content is requested during the copy dialog.
4. D. In order for the router to use the new image as the default, it must be the only IOS image in flash.

Correct Answer: C

Which of the following CLI operating modes, by default, allow you to copy a Cisco IOS image to flash memory from TFTP server?

1. A. User EXEC
2. B. Privileged EXEC
3. C. FTP
4. D. Global configuration

Correct Answer: B

Which two statements about fiber cable are true? (Choose two)

1. A. Single-mode fiber supports SC and LC connectors only.
2. B. Multimode cable supports speeds between 100 Mbps and 9.92 Gbps.
3. C. Single-mode cable is most appropriate for installations longer than 10 km.
4. D. Fiber cable is relatively inexpensive and supports a higher data rate than coaxial cable.
5. E. Mulitimode cable supports speeds between 100 Mbps and 100 Gpbs.

Correct Answer: DE

Which port displays the bootup process on a Cisco device?

1. A. ATM
2. B. BVI
3. C. Console
4. D. Ethernet

Correct Answer: C

Which of the following best describes the cable that is used to connect a laptop to an Ethernet port on a Cisco router?

1. A. Crossover
2. B. Straight-through
3. C. Fiber
4. D. Rollover

Correct Answer: A