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46. John is experiencing a problem with his computer. The computer does not boot to the operating system and the message "NTLDR is missing" appears every time the system is turned on. What is the troubleshooting step he should perform?
47. Martha gets an error message every time her system boots up. The error message reads “A service did not start.” Where is the best place to look for more information on this error message?
48. John is working in the Network repair and troubleshooting unit with a DSL service provider. He is trying to fix an issue with packets being lost enroute to the destination. Which of these utilities can be used to find the number of hops a packet takes from the source to the destination?
49. David has been told by a Technical Support Executive to clear all temporary internet files from his computer to improvethe internet access speed and reliability on his computer. Which of the following utilities should he use?
50. Mark has implemented a Firewall on his corporate network. A client reports that he is not able to access the FTP site outside the network. Which port is being filtered?
