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Network + > NETWORK TROUBLESHOOTING > Flashcards

NETWORK TROUBLESHOOTING Flashcards

1
Q

____ can tell you if the TCP/IP stack of another system on the network is functioning normally and if you have connectivity to it. It can also verify name resolution. The ____ program generates a series of Echo Request messages by using the Internet Control Message Protocol (ICMP), which is encapsulated directly within IP datagrams, and transmits them to the computer whose name or IP address you specify on the command line.

A

ping

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2
Q

Which display is represented below:

statistics for 192.168.2.10:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

A

ping

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3
Q

a variant of the Ping program that displays the path that packets take to their
destination. Because of the nature of IP routing, paths through an internetwork can change from minute to minute

A

traceroute

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4
Q

Which display is represented below:

Windows IP Configuration
Host Name . . . . . . . . . . . . : wkstn12
Primary Dns Suffix . . . . . . . : adatum.local
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : adatum.local
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : adatum.local
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 60-EB-69-93-5E-E5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7441:4473:f204:ec1d%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.9(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, March 14, 2012 8:05:32 AM
Lease Expires . . . . . . . . . . : Thursday, March 22, 2012 8:05:29 AM
Default Gateway . . . . . . . . . : 192.168.2.99
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 241232745
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-81-CC-39-60-EB-69-93-5E-E5
DNS Servers . . . . . . . . . . . : 192.168.2.1
Primary WINS Server . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

A

ipconfig/ ifconfig

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5
Q

enables a TCP/IP computer to convert IP addresses to the hardware addresses that data-link layer protocols need to transmit frames across local subnets

A

Address Resolution Protocol (ARP)

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6
Q

Displays the contents of the ARP cache. The optional ipaddress vari-
able specifies the address of a particular cache entry to be displayed.

A

-a {ipaddress}

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7
Q

Displays only the contents of the ARP cache associated with the network interface specified by the ifaddress variable.

A

-n ifaddress

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8
Q

Adds a static entry to the ARP cache. The
ipaddress variable contains the IP address of the host. The hwaddress variable contains the hardware address of the same host. The ifaddress variable contains the IP address of the network interface in the local system for which you want to modify the cache

A

-s ipaddress hwaddress {ifaddress}

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9
Q

Deletes the entry in the ARP cache that is associated with
the host represented by the ipaddress variable. The optional ifaddress variable specifies
the cache from which the entry should be deleted.

A

-d ipaddress {ifaddress}

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10
Q

which display is represented below:

Interface: 192.168.2.9 --- 0xa
Internet Address Physical Address Type
192.168.2.1 00-0b-cd-cf-e3-b6 dynamic
192.168.2.3 00-22-64-34-12-4b dynamic
192.168.2.4 00-11-2f-46-c1-46 dynamic
192.168.2.99 00-1c-10-08-f6-1a dynamic
192.168.2.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.251 01-00-5e-00-00-fb static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
A

ARP

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11
Q

is a command-line program that displays status information about the current net-
work connections of a computer running TCP/IP and about the traffic generated by the TCP/IP
protocols

A

netstat

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12
Q

. In UNIX and Linux, the program is called netstat, and in Windows, it is called

A

netstat.exe

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13
Q

netstat command that Refreshes the display every interval seconds until the user aborts the command.

A

interval

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14
Q

netstat command that Displays the current network connections and the ports that are currently listening
for incoming network connections.

A

-a

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15
Q

netstat command that Displays the currently active connections for the protocol specified by the protocol variable

A

-p

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16
Q

netstat command that When combined with other parameters, causes the program to identify computers using IP addresses instead of names.

A

-n

17
Q

netstat command that Displays incoming and outgoing traffic statistics for the network interface. The statistics are broken down into bytes, unicast packets, non-unicast packets, discards, errors, and unknown protocols

A

-e

18
Q

netstat command that Displays the routing table plus the current active connections

A

-r

19
Q

netstat command that Displays detailed network traffic statistics for the IP, ICMP, TCP, and UDP protocols.

A

-s

20
Q

a Windows command-line program that displays information about the Net-
BIOS Over TCP/IP (NetBT) connections that Windows uses when communicating with other computers running Windows on a TCP/IP network

A

nbstat.exe

21
Q

Displays the NetBIOS names registered on the computer identified by the
name variable

A

-a name

22
Q

Displays the NetBIOS names registered on the computer identified by
the ipaddress variable

A

-A ipaddress

23
Q

Displays the contents of the local computer’s NetBIOS name cache

A

-c

24
Q

Displays the NetBIOS names registered on the local computer

A

-n

25
Q

Displays the number of NetBIOS names registered and resolved by the local com-
puter, using both broadcasts and Windows Internet Name Service (WINS)

A

-r

26
Q

Purges the local computer’s NetBIOS name cache of all entries and reloads the
Lmhosts file

A

-R

27
Q

Displays a list of the computer’s currently active NetBIOS settings (identifying
remote computers by name), their current status, and the amount of data transmitted
to and received from each system

A

-s

28
Q

Displays a list of the computer’s currently active NetBIOS settings (identifying re-
mote computers by IP address), their current status, and the amount of data transmit-
ted to and received from each system

A

-S

29
Q

Sends name release requests to WINS, then starts refresh

A

-RR

30
Q

command-line utilities enable you to
generate DNS request messages and transmit them to specific DNS servers on the network. The advantage of Nslookup is that you can test the functionality and the quality of the information on a specific DNS server by specifying it on the command line

A

nslookup

31
Q

Specifies the DNS name that you want to resolve

A

DNSname

32
Q

Specifies the DNS name or IP address of the DNS server that you want to query for the name specified in the DNSname variable

A

DNSserver

33
Q

which display is represented below:

C:\Users\craigz.ZACKER>nslookup www.microsoft.com 192.168.2.1
Server: cz1.zacker.local
Address: 192.168.2.1
Non-authoritative answer:
Name: lb1.www.ms.akadns.net
Address: 207.46.131.43
Aliases: www.microsoft.com
toggle.www.ms.akadns.net
g.www.ms.akadns.net
A

nslookup

34
Q

is a name resolution utility that has largely replaced nslookup in most UNIX and Linux distributions, due in part to its extensive list of options and its more detailed output. The basic

A

dig

35
Q

are command-line programs that display

and manage the contents of the system’s routing table

A

route

Network + (10 decks)

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