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46 Cards in this Set
- Front
- Back
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What does intermittent mean?
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It happens sometimes, it does not happen sometimes.
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What is another word for intermittent?
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Flaky
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What does a successful ping prove?
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All the pieces were working at that moment.
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What does a failed ping prove?
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One or more pieces involved were not working at that moment.
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What statistic does ping report?
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Latency
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Using ping to troubleshoot, conventional wisdom says you should ping what first?
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Yourself, using your local host address: 127.0.0.1
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Using ping to troubleshoot, conventional wisdom says you should ping what second?
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Yourself, using your LAN address.
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Using ping to troubleshoot, conventional wisdom says you should ping
what third? |
something else inside your LAN, typically your router or gateway
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Using ping to troubleshoot, conventional wisdom says you should ping what third?
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Something beyond your LAN.
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What is localhost?
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Localhost is the computer you are using.
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What does intermittent mean?
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It happens sometimes, it does not happen sometimes.
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What is another word for intermittent?
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Flaky
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What does a successful ping prove?
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All the pieces were working at that moment.
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What does a failed ping prove?
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One or more pieces involved were not working at that moment.
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What statistic does ping report?
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Latency
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Using ping to troubleshoot, conventional wisdom says you should ping what first?
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Yourself, using your local host address: 127.0.0.1
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Using ping to troubleshoot, conventional wisdom says you should ping what second?
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Yourself, using your LAN address.
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Using ping to troubleshoot, conventional wisdom says you should ping
what third? |
something else inside your LAN, typically your router or gateway
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Using ping to troubleshoot, conventional wisdom says you should ping what third?
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Something beyond your LAN.
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What is localhost?
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Localhost is the computer you are using. On every computer the address will be 127.0.0.1
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What is the IPv4 address of the localhost?
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127.0.0.1
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What things does a successful ping to localhost prove?
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Your network stack (software) is working.
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How can you (the user) find your IP address?
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Use ipconfig, or ifconfig or a mac/linux
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What things does a successful ping to your own LAN address prove?
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Your network stack (software) is working and 2. your network card
(hardware) is working. |
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What things does a successful ping to your neighbor prove?
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1. Your network stack (software) is working, 2. your network card (hard-
ware) is working, 3. your network connection (cable) is working, 4. your neighboring computer is working. |
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What is a smurf attack?
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A broadcast ping with a fake source address.
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What information can a broadcast ping provide?
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IP addresses and latencies of all devices on your network.
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What things does a successful ping to something beyond your LAN prove?
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1. Your network stack (software) is working, 2. your network card (hard-
ware) is working, 3. your network connection (cable) is working, and 4. your gateway router is working. |
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What does TTL stand for?
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Time to live
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What does TTL prevent?
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Infinite loops.
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How does traceroute use TTL?
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It sends packets with varying TTL counts. As each packet dies, its loca-
tion of death is reported. |
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Which is more secure SSH or FTP?
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SSH
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Which is more widely availible? SSH or FTP?
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FTP
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What port does FTP normally use?
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21
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Is SSH considered to be secure?
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Yes, data is encrypted.
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Which is more secure? SSH or Telnet
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SSH
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Which is more widely available? SSH or telnet
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telnet
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What port does telnet normally use?
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23
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What is telnetd
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the telnet daemon
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In a program name, what does the suffix "d" usually mean?
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It usually means "daemon".
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What does ssh stand for?
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Secure shell
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How does ssh establish a secure connection?
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It uses a public-key system like RSA to create a shared secret.
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Which is more current, nslookup or dig?
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dig
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What does depreciated mean?
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Being phased out
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What does Wireshark do?
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It captures and reports network traffic (data) as it passes through an interface.
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How does Wireshark get data?
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It captures data that is passing through a nearby interface.
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