Exam 7 Flashcards
(327)What does intermittent mean?
Sometimes it happens, sometimes it doesn’t.
(328)What is another word for intermittent?
Flaky
(329)What does a successful ping prove?
All the pieces involved were working AT THAT MOMENT
(330)What does a failed ping prove?
ONE OR MORE pieces involved were not working at that moment
(331)What statistic does ping report?
Latency
(332)Using ping to troubleshoot, conventional wisdom says you should ping what first?
yourself, using your host address`
(333)Using ping to troubleshoot, conventional wisdom says you should ping what second?
Yourself, using your LAN address
(334)Using ping to troubleshoot, conventional wisdom says you should ping what third?
Something else inside your LAN, typically your router or gateway
(335) Using ping to troubleshoot, conventional wisdom says you should ping what fourth?
something beyond your LAN
(336)What is localhost?
Localhost is the computer you are using
(337)What is the IPv4 address of localhost?
127.0.0.1
(338)What things does a successful ping to localhost prove?
Your network stack (software) is working
(339)How can you (the user) find your IP address?
Use ipconfig (or ifconfig)
(340)What things does a succsesful ping to your own LAN address prove?
1)Your network stack (software) is working 2) Your network card (hardware) is working
(341)What things does a successful ping to your neighbor prove?
1)Your network stack (software) is working 2) Your network card (hardware) is working 3) Your network connection (cable) is working 4) Your neighboring computer is working
(342)What is a smurf attack?
A broadcast ping with a fake source address
(343)What is a broadcast ping with a fake source address called?
A smurf attack
What information can a broadcast ping provide?
IP address and latencies of all devices within your LAN?
(345)What IP address is used for global broadcast?
255.255.255.255
(346)What things does a successful ping to something beyond your LAN prove?
1)Your network stack (software) is working 2) Your network card (hardware) is working 3) Your network connection (cable) is working 4) Gateway router is working
(347)What two things does traceroute report?
a)the list of routers between source and destination b) latency for each router.
(348)What does TTL stand for?
Time to live
(349)What is the purpose of TTL?
Prevent infinite loops
(350)How does traceroute use TTL?
It sends packets with varying TTL counts. As each packet dies, its location of death is reported.
(351)What does FTP stand for?
File transfer (or transport) protocol
(352)Is FTP considered to be secure? Why?
No, traffic (data) is not encrypted.
(353)Which is more secure, ssh or ftp?
SSH
(354)Which is more widely available, ssh or ftp?
FTP
(355)What port does FTP normally use?
21
(356)Is telnet considered to be secure? Why?
No, traffic (data) is not encrypted
(357)Is SSH considered to be secure? Why?
Yes, traffic (data) is encrypted
(358)Which is more secure, ssh or telnet?
SSH
(359)Which is more widely available, ssh or telnet?
Telnet
(360)What port does telnet normally use?
23
(361)What is telnetd?
telnet daemon
(362)What is a daemon?
A daemon is a program that interacts with other programs instead of interacting with an end user
(363)In a program name, what does the suffix “d” usually mean?
It usually means “daemon”
(364)What port does SSH normally use?
22
(365)What does SSH stand for?
secure shell
(366)How does ssh establish a secure connection?
It uses a public-key system like RSA to create a shared secret.
(367)Which is more current, nslookup or dig?
dig
(368)What does deprecated mean?
being phased out
(369)What does Wireshark do?
It captures and reports network traffic (data) as the traffic passes through an interface.
(370)How does Wireshark get data?
It captures data that is passing through a nearby interface.
