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IT 280 OSI > Exam 7 > Flashcards

Exam 7 Flashcards

1
Q

(327)What does intermittent mean?

A

Sometimes it happens, sometimes it doesn’t.

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2
Q

(328)What is another word for intermittent?

A

Flaky

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3
Q

(329)What does a successful ping prove?

A

All the pieces involved were working AT THAT MOMENT

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4
Q

(330)What does a failed ping prove?

A

ONE OR MORE pieces involved were not working at that moment

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5
Q

(331)What statistic does ping report?

A

Latency

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6
Q

(332)Using ping to troubleshoot, conventional wisdom says you should ping what first?

A

yourself, using your host address`

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7
Q

(333)Using ping to troubleshoot, conventional wisdom says you should ping what second?

A

Yourself, using your LAN address

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8
Q

(334)Using ping to troubleshoot, conventional wisdom says you should ping what third?

A

Something else inside your LAN, typically your router or gateway

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9
Q

(335) Using ping to troubleshoot, conventional wisdom says you should ping what fourth?

A

something beyond your LAN

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10
Q

(336)What is localhost?

A

Localhost is the computer you are using

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11
Q

(337)What is the IPv4 address of localhost?

A

127.0.0.1

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12
Q

(338)What things does a successful ping to localhost prove?

A

Your network stack (software) is working

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13
Q

(339)How can you (the user) find your IP address?

A

Use ipconfig (or ifconfig)

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14
Q

(340)What things does a succsesful ping to your own LAN address prove?

A

1)Your network stack (software) is working 2) Your network card (hardware) is working

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15
Q

(341)What things does a successful ping to your neighbor prove?

A

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

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16
Q

(342)What is a smurf attack?

A

A broadcast ping with a fake source address

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17
Q

(343)What is a broadcast ping with a fake source address called?

A

A smurf attack

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18
Q

What information can a broadcast ping provide?

A

IP address and latencies of all devices within your LAN?

19
Q

(345)What IP address is used for global broadcast?

A

255.255.255.255

20
Q

(346)What things does a successful ping to something beyond your LAN prove?

A

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

21
Q

(347)What two things does traceroute report?

A

a)the list of routers between source and destination b) latency for each router.

22
Q

(348)What does TTL stand for?

A

Time to live

23
Q

(349)What is the purpose of TTL?

A

Prevent infinite loops

24
Q

(350)How does traceroute use TTL?

A

It sends packets with varying TTL counts. As each packet dies, its location of death is reported.

25
Q

(351)What does FTP stand for?

A

File transfer (or transport) protocol

26
Q

(352)Is FTP considered to be secure? Why?

A

No, traffic (data) is not encrypted.

27
Q

(353)Which is more secure, ssh or ftp?

A

SSH

28
Q

(354)Which is more widely available, ssh or ftp?

A

FTP

29
Q

(355)What port does FTP normally use?

A

21

30
Q

(356)Is telnet considered to be secure? Why?

A

No, traffic (data) is not encrypted

31
Q

(357)Is SSH considered to be secure? Why?

A

Yes, traffic (data) is encrypted

32
Q

(358)Which is more secure, ssh or telnet?

A

SSH

33
Q

(359)Which is more widely available, ssh or telnet?

A

Telnet

34
Q

(360)What port does telnet normally use?

A

23

35
Q

(361)What is telnetd?

A

telnet daemon

36
Q

(362)What is a daemon?

A

A daemon is a program that interacts with other programs instead of interacting with an end user

37
Q

(363)In a program name, what does the suffix “d” usually mean?

A

It usually means “daemon”

38
Q

(364)What port does SSH normally use?

A

22

39
Q

(365)What does SSH stand for?

A

secure shell

40
Q

(366)How does ssh establish a secure connection?

A

It uses a public-key system like RSA to create a shared secret.

41
Q

(367)Which is more current, nslookup or dig?

A

dig

42
Q

(368)What does deprecated mean?

A

being phased out

43
Q

(369)What does Wireshark do?

A

It captures and reports network traffic (data) as the traffic passes through an interface.

44
Q

(370)How does Wireshark get data?

A

It captures data that is passing through a nearby interface.

IT 280 OSI (6 decks)

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