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CompTIA Network+ > Chapter 17 - Supplement - Sheet1 > Flashcards

Chapter 17 - Supplement - Sheet1 Flashcards

1
Q

Protocol Analyzers

A

AKA sniffers / network monitors. Uysed to capture packets in their raw format as they cross the network.

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2
Q

Examples of protocol analyzers

A

Wireshare, OmniPeek

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3
Q

Promiscuous Mode

A

NIC processes all packets that it sees

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4
Q

Throughput Testers

A

Usually software based, work much like a protocol analyzer in that they measure traffic, but these measure throughput of that traffic (network speeds)

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5
Q

Connectivity Software

A

Designed to allow you to make a connection to a machine, its desktop, and perform any action you could perform while sitting in front of it.

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6
Q

Traceroute

A

(AKA trace) displays the path a packet takes to get to a remote device by using IP Packet TTL, time-outs, and ICMP error messages.

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7
Q

ipconfig / ifconfig

A

Display the current configuration of TCP/IP on a given workstation. Includes IP, DNS, WINS config and default gateway

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8
Q

OSes that use ipconfig

A

New Macs, Windows

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9
Q

ipconfig /all

A

ipconfig option that gives you hardware addresses, DHCP lease times, and DNS addresses

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10
Q

ipconfig /release & ipconfig /renew

A

Renews the IP address lease, or gets a new one if applicable.

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11
Q

OSes that use ifconfig

A

Linxus, Unix, Mac

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12
Q

ifconfig

A

ipconfig equivalent. Short for interface configuration

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13
Q

2 purposes to using the ping utility

A

To find out if a host is responding OR to find out if you can reach a host

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14
Q

ping -t

A

Pings the specified host until stopped

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15
Q

ping -a

A

Resolves addresses to hostnames

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16
Q

ping - n count

A

Specified the number of echo requests to send. Default is 4. (4 “Reply from…”)

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17
Q

ping -w timeout

A

Set the timeout time in milliseconds. Default is 1000, which is 1 second

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18
Q

ARP

A

Address Resolutin Protocol. Used to translate TCP/IP addresses to MAC addresses using broadcasts.

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19
Q

ARP Table

A

Windows table that includes a list of TCP/IP addresses and their associated physical (MAC) addresses. Cached in memory to reduce the need to perform lookups

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20
Q

2 Types of Entries in the ARP Table

A

Dynamic and Static

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21
Q

Dynamic ARP table entries

A

Created whenever the Windows TCP/IP stack performs an ARP lookup but the MAC address isn’t found in the ARP table. When MAC address is finally resolved (via Broadcast) that info is added to the table.

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22
Q

Static ARP table entries

A

Manually added MAC addresses.

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23
Q

arp -a

A

Dispays current ARP entries.

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24
Q

arp -g

A

Dispays current ARP entries. Same as arp -a

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25
Q

arp -a -v

A

Verbose ARP entries - shows all invalid entires and regular arp -a entries

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26
Q

arp -s [IP Address] [MAC Address]

A

Add a static entry into the ARP table

27
Q

Unix’s version of nslookup

A

dig

28
Q

nslookup

A

Allows you to query a name server and quickly find out which name resolves to which ip address

29
Q

Location of hosts table on Windows

A

C:\Windows\System32\drivers\etc\

30
Q

DOS Command to display the PC name

A

hostname

31
Q

mtr

A

AKA My traceroute. Computer program that c ombines the functions of the traceroute and pint utilities in a single network diagnostic tool.

32
Q

route

A

Command used to set network routing rules. Usually Windows takes care of this.

33
Q

netstat

A

Lists the inbound and outbound conections on your machine. Can also use it to view packet stats and errors

34
Q

netstat -e

A

Displays ethernet stats. Combined with -s, displays stats by protocol. Stats are for since the PC has been turned on.

35
Q

netstat -s

A

Displays ethernet stats by protocol. Stats are for since the PC has been turned on.

36
Q

netstat -r

A

Displays routing table. Same output as route print

37
Q

netstat -a

A

Displays all TCP/IP connections and UDP connections

38
Q

“bytes” in netstat -e tells you

A

Number of bytes sent or received at this PC’s NIC. Good for determining if a network connection is actually transmitting.

39
Q

“unicast packets” in netstat -e tells you

A

Number of packets sent from or received at this PC.

40
Q

“non-unicast packets” in netstat -e tells you

A

Number of packets that weren’t directly sent from a workstation to another. Example: Broadcast packets. Number of non-unicast packets should be smaller than unicase packets.

41
Q

“discards” in netstat -e tells you

A

Number of packets discarded by the NIC during transmission or reception b/c they weren’t assembled correctly

42
Q

“unknown protocols” in netstat -e tells you

A

Number of received packets that the Windows networking stat couldn’t interpret. Only in the received column. Certainly it wouldn’t send unknown protocols

43
Q

netstat -s -p

A

netstat -s but allows you to specify the protocol after the -p switch

44
Q

-n switch for netstat

A

Works with other switches. Displays the IP address instead of the hostname

45
Q

Command to start FTP session in DOS

A

ftp

46
Q

Command to open FTP server in FTP mode

A

open servername.domain.com

47
Q

Common to quit FTP from DOS

A

quit

48
Q

Commands to set file type in FTP mode in dos

A

ascii, binary

49
Q

Command to download file in FTP mode from DOS

A

get filename.exe

50
Q

Command to download multiple files in FTP mode in dos

A

mget

51
Q

Use mget to download all txt files

A

mget *.txt

52
Q

At FTP command prompt, how do you navigate to a location on the local machine to position your self to upload a file in that directory?

A

lcd c:\path\to\directory

53
Q

FTP command from DOS to upload a file

A

put local-filename.txt remote-name.txt

54
Q

Why is it not recommended that you use telnet

A

Not encrypted. Insecure.

55
Q

What command can you type from a command prompt to see the hops a packet takes
to get to a destination host?

A

Tracert

56
Q

What tool would you use to verify a complaint about a slow network?

A

Throughput tester

57
Q

You need your IP address, subnet mask, default gateway, and DNS information. What
command will you type from a Windows command prompt?

A

ipconfig /all

58
Q

You need to log in as a dumb terminal to a server or UNIX host and run programs.
What application will you use?

A

Telnet

59
Q

You need to add a route to your Windows server’s routing table. What command will
you use?

A

route

60
Q

You want to log in to a server and transfer files. What application will you use?

A

FTP

61
Q

You need to check your name-resolution information on your host. What command
will you type from the command prompt?

A

nslookup

62
Q

You want to use netstat, but you want to see only the IP address, not the names of the
hosts. Which modifier will you use?

A

-n

63
Q

You want the IP configuration on a UNIX host. What command will you type at the
command prompt?

A

ifconfig

64
Q

Which Windows command will show you the routing table of your host or server?

A

route print

CompTIA Network+ (30 decks)

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