CompTIA Network questions and answers GRADE A+ SOLUTIONS

You are nearing the completion of an upgrade that involves implementing a new network infrastructure and upgrading the operating systems running on your network servers. Currently, static IP addresses and HOSTS files are used. The upgrade has included implementing DNS, implementing DHCP, and moving servers and other resources to a new location with new IP addresses. However, you cannot access the resources that were moved using their host names from any of the client workstations. You can access them by their IP addresses. What should you do first? A) Delete the HOSTS file on each workstation. B) Configure DHCP to supply a different range of IP addresses to the workstations. C) Import the workstations' names and address mapping to DNS. D) Enable NetBIOS over TCP/IP A) Delete the HOSTS file on each workstation. /Workstations read entries in ther HOSTS files before making requests to DNS. In this scenario, this behavior would cause the workstation to use the incorrect IP address when attempting to access a server by its host name. For example, suppose an FTP server with an original IP address of 172.35.2.100 and the host name was moved and its address changed to 172.25.2.300. When a user typed in the URL for the server in a browser, the client would search its HOSTS file and find an entry for at IP address 172.35.2.100, which is the wrong IP address. However, if you delete the HOSTS file, or remove the entry for the server, the workstation will search DNS to resolve the server's host name when it does not find an entry for the server the local HOSTS file. If you have trouble resolving DNS names, but can locate resources using their IP addresses, the DNS server is probably down Your 100BaseT network uses the TCP/IP protocol suite exclusively, and workstations on your network obtain addresses dynamically from a server. From your computer, you can contact all servers and workstations on your own network segment, but you are unable to gain access to network resources on other segments. Which factors should you investigate? (Choose two.) A the routers B the frame types C the default gateway D IP address conflicts A) the routers C) the default gateway A user is not able to access shared folders on the network. While troubleshooting the problem, the technician first checks for the link lights on the Network Interface Card (NIC). The technician observes that the link lights are not on or blinking on the NIC. Which actions should the technician perform to resolve the problem by using the least amount of administrative effort? (Choose two) A) Run the ipconfig/ release command B) Replace the NIC. C) Run the ipconfig/ flushdns command. D) Check that the swtich is on and the other end of the cable is connected to the switch. E) Replace the network cable. D) Check that the switch is on and the other end of the cable is connected to the switch. E) Replace the network cable. /To resolve the problem by using the least amount of administrative effort, the technician should check that the switch is on and the other end of the cable is not connected to the switch. If the switch is not on, or if the other end of the network cable is not connected to the switch, the user's computer will not be connected to the network. Therefore, the technician should check these areas first. If the problem persists, the technician must try replacing the network cable to resolve the problem because faulty cables can cause network problems. Therefore, while troubleshooting network problems, you should check if the network cable is properly functioning. The number one A+ rule for connectivity issues is always check the connection. You are the network administrator for Nutex Corporation. You have configured a wireless network for a group of users to provide Internet access. However, users complain that they are facing intermittent loss of wireless connection. You have verified the hardware and software configuration of both your Asymmetric Digital Subscriber Line (ADSL) modem and wireless router and your DSL line from the Internet Service Provider (ISP). What could be causing your problems? A) DSL filters B) Wireless router C) Cordless phones D) Televison set C) Cordless phones /Cordless phones and other types of physical obstructions can cause intermittent loss in wireless connectivity. CONTINUED........