Your network contains Routers which typically fails once every five years. The total cost of a router is $200. A technician, who is paid $40 per hour, needs 2 hours to replace one failed router. 10 employees, who earn an average of $20 per hour, will be unproductive until the router is replaced. Which of the following is the ARO? (select the best answer)

Masked ROM (MROM) · It contains a pre-programmed set of data and instructions burnt onto the chip during the manufacturing process. · The information once written cannot be changed. Programmable ROM (PROM) · It is manufactured as a blank chip which can be programmed using a special device called a PROM programmer or PROM burner. · Once programmed, its contents cannot be modified or erased. Erasable Programmable ROM (EPROM) · It can be programmed multiple times unlike PROM. · The chip contents can be erased and re-written by exposing it to strong ultraviolet (UV) light. Electrically Erasable Programmable ROM (EEPROM) · It can be programmed multiple times like EPROM. · Unlike EPROM, the data can be erased and re-written electronically with no need of UV light. · Selective data can be erased from the EEPROM without erasing the whole chip. Test your knowledge: What type of ROM is a Flash Memory drive – MROM, PROM, EPROM, EEPROM?

Which of the following is NOT true of an Ethernet network? a) Ethernet is a broadcast medium. b) Ethernet is a switched medium. c) IP addresses can be forged on an Ethernet network. d) MAC addresses can be forged on an Ethernet network.

Which of the following is not a valid purpose of using Network Address Translation (NAT)? A. Conserving public IP addresses. B. Allowing internal hosts to access external networks. C. Allowing external hosts to directly access internal hosts. D. Enhancing security by masking internal IP addresses.

Hey everyone, I wanted to acknowledge that I didn't do the best job responding to questions about NAT-T during our live session last week. To make up for it, I've put together some more helpful information that should provide clarity on the topic and linked a good video. You can find the details by following the link to this page. I hope this helps! Thanks for your understanding and patience as I learn! ~ Josh