Answer 20 questions about Computer Networks

For this project, you will simply write answers to these 20 questions about computer networks: 1. Which kind of crosstalk occurs between wire pairs near the source of the signal? 2. What is the earliest twisted-pair cabling standard that meets the minimum requirements for 10GBase-T transmissions? 3. What is a twist ratio, and why is it important? 4. What characteristic of optical transmissions is primarily responsible for the distance limitations of fiber-optic cabling? 5. Why is SMF more efficient over long distances than MMF? 6. Suppose you’re assisting with a cable installation using fiber-optic cabling that will support Gigabit Ethernet. You’re approved to install segments up to 4000 m in length. What kind of cable are you using? 7. What kind of tool can measure the distance to the location of damage in a cable? 8. What is the lowest layer of the OSI model at which wired and wireless transmissions share the same protocols? 9. Which Bluetooth class has the highest power output? 10. Which 802.11 standard functions in both the 2.4-GHz and 5-GHz bands? a. 802.11g b. 802.11ac c. 802.11b d. 802.11n 11. You’ve just completed a survey of the wireless signals traversing the airspace in your employer’s vicinity, and you’ve found an unauthorized AP with a very strong signal near the middle of the 100-acre campus. What kind of threat do you need to report to your boss? a. Rogue AP b. War driving c. Bluesnarfing d. Hidden node 12. When a wireless signal encounters a large obstacle, what happens to the signal? 13. Which Wi-Fi frequency band offers 24 unlicensed communications channels in the United States? 14. You’re setting up a home network for your neighbor, who is a music teacher. She has students visiting her home regularly for lessons and wants to provide Internet access for their parents while they’re waiting on the children. However, she’s concerned about keeping her own data private. What wireless feature can you configure on her AP to meet her requests? 15. You are working as a Systems Engineer for an Auto Dealer. You need to deploy a set of Wi-Fi IP Phones for your masters who often walk throughout different facilities in one site. How would you locate the Wi-Fi Access Points and how would you setup the Wi-Fi channels to be used by those WAPs? 16. For the case of Problem 16, you are concerned about security issues. The Wi-Fi coverage can be accessible from Customer Lounge and even from outside your facilities. How to make the Wi-Fi network secure? Assume that your corporate network is based on Microsoft Windows Server 2016 Active Directory services. 17. How many bits of a Class A IP address are used for host information? 18. While designing your network’s VLAN topology, your team has decided to use a centrally managed DHCP server rather than creating a separate DHCP server for each VLAN. What software will you need in order to make the central DHCP server accessible across VLANs? a. DHCP relay agent b. DHCP server c. Hypervisor d. Virtual router 19. What is the network ID with CIDR notation for the IP address [login to view URL] whose subnet mask is [login to view URL] 20. Suppose your company has leased one Class C license, [login to view URL], and wants to sublease the first half of these IP addresses to another company. What is the CIDR notation for the subnet to be subleased? What is the subnet mask for this network? What are the Network ID and the subnet mask for the network using the second half of the IP addresses?