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Networking Fundamentals > Lesson 14 > Flashcards

Lesson 14 Flashcards

1
Q

netstat

A

A command-line tool that measures network statistics for a computer. It can also show all open ports and identify applications that are using the ports.

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2
Q

pathping

A

A command-line tool that combines the features of ping and tracert. It measures packet loss for each router between the source and destination.

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3
Q

ping

A

A command-line tool that checks connectivity with a remote system. It sends out four packets, and if the target computer is up, it can send back four echo packets back, indicating it’s up. Ping uses ICMP, which is often blocked.

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4
Q

tracert

A

A command-line tool that identifies all the routers between a source computer and a destination computer.

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5
Q

What is the command to view all open ports including known applications on a Windows Server 2008 system?

A

netstat -b

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6
Q

You use the ping command to check connectivity with a server named FS1 and receive the following error: “Destination Host Unreachable.” What is the most likely reason for this error?

A

Name resolution didn’t work.

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7
Q

True or false. You can measure packet loss using the tracert command.

A

False

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8
Q

Which of the following utilities will produce the output shown in the figure below?

Reply from 205.138.192.8: bytes=32 time=337ms TTL=53

Ping statistics for 205.138.192.8
…..

A

ping

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9
Q

True or false. The Telnet client is installed by default in Windows Server 2008

A

False

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10
Q

What command can you use to determine a computer’s default gateway? (Choose all that apply.)

A

ipconfig

ipconfig /all

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11
Q

What switch can you use to view help for a command?

A

/?

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12
Q

You want to verify a computer can connect with the default gateway. It has an IP address of 192.168.1.1. What command should you use?

A

ping 192.168.1.1

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13
Q

Which of the following is used to find problems in the network and to determine the amount of traffic on the network as a performance measurement?

A

netstat

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14
Q

Which of the following utilities will produce the output as shown in the image below?

Active Connections
Proto Local Address Foreign Address
TCP LAPTOP5:1093 cs31.msg.dcn.yahoo.com:5050

A

netstat

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15
Q

The ____ utility displays the statistics and state of current TCP/IP connections?

A

NETSTAT

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16
Q

You use the ping command to check connectivity with a server named DC1 and receive the following error: “Ping request could not find host dc1. Please check the name and try again.” What does this error mean?

A

Name resolution didn’t work.

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17
Q

Mark works as a Network Administrator for TechMart Inc. His Windows computer is configured to automatically receive an IP address. It also has APIPA enabled. Mark is using the IP command to check the TCP/IP on his computer. He wants to check whether the computer has connectivity with a server on the same subnetwork. He observes that it has an IP address of 0.0.0.0. Which of the following is the reason of this problem?

A

Windows is unable to detect a connection to the network media.

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18
Q

You work as a network administrator for Tech Perfect Inc. Rick, a new colleague, needs information regarding his computer’s IP address lease start date and expiry date. Which of the following commands will help him?

A

ipconfig /all

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19
Q

Select the various ping switch commands according to their usages in the following figure.

A 
Ping 4
Ping t
Ping a
Ping w
Ping 6
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20
Q

Which of the following are used to identify a router that is facing problems?

A

pathping

tracert

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21
Q

You work as a Network Administrator for Tech Perfect Inc. The company has a TCP/IP-based network. You want to know the current TCP/IP network configuration settings, DHCP server IP address, and DHCP lease expiration date of your network. Which of the following utilities will you use?

A

ipconfig

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22
Q

Which of the following command-line utilities is used to show the state of current TCP/IP connections?

A

netstat

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23
Q

Which of the following conclusions can be drawn from viewing the given output generated by the ping command-line utility?

“Requested timed out.”

A

There is no connectivity between the source and the destination computer.

24
Q

Which of the following utilities produces the output shown in the figure below?

Reply from 127.0.0.1: bytes=32 time

A

ping

25
Q

What is the function of the tracert utility?

A

Trace the path taken by TCP/IP packets to a remote computer.

26
Q

You work as a technician for Net Perfect Inc. You are troubleshooting a connectivity issue on a network. You are using the ping command to verify the connectivity between two hosts. You want to send larger sized packets than the usual 32-byte ones. Which of the following commands will you use?

A

ping -l

27
Q

You work as a Network Administrator for Net Perfect Inc. The company has a TCP/IP-based network. The network is connected to the Internet through a firewall. A user complains that he is unable to access the abc.com site. However, he can access all other sites. Which of the following tools will help you diagnose the problem?

A

tracert

28
Q

Match the commands with their usages.

A

Pathping: To check the route between the two computers and then to check for connectivity at each router
Tracert: To verify the path throughout an entire network
Netstat: To display information on any TCP/IP connections on a computer
Ping: To check connectivity with other computers

29
Q

Which of the following commands is used to view the detailed TCP/IP configuration information on a computer?

A

IPconfig

30
Q

You work as a Network Administrator for McRobert Inc. Your company has a TCP/IP-based network. You want to know the statistics of each protocol installed on your computer. Which of the following commands will you use?

A

netstat -s

31
Q

Which of the following utilities are similar in function?

A

ping

tracert

32
Q

You work as a Network Administrator for McRobert Inc. Your company has a TCP/IP-based network. You want to get the protocol statistics and the active TCP/IP network connections of your computer. Which of the following will you use?

A

netstat

33
Q

You work as a Network Administrator for uCertify Inc. You want to verify whether your computer is using Teredo for IPv6 compatibility and also want to remove the contents of the host cache. What command will you type in the cmd prompt to accomplish the task?

A

ipconfig /all

ipconfig /flushdns

34
Q

Which of the following commands is used to delete the entries in the Domain Name System (DNS) cache on a client computer?

A

IPconfig

35
Q

Mark works as a Network Administrator for TechMart Inc. He uses a firewall to separate a management workstation from a router. He wants to manage the router by using telnet without specifying a port. Which of the following must be permitted by the firewall?

A

Traffic on port 23

36
Q

Which of the following utilities produces the output displayed in the figure below?

Host Name……: Client 1
Primary DNS Suffix…..: zen.com
…..

A

ipconfig

37
Q

Which of the following is a function of the TCP/IP arp command?

A

To resolve IP addresses to MAC addresses

38
Q

Which of the following is used to troubleshoot a DNS server?

A

nslookup

39
Q

Which of the following is used to test connectivity by sending data and receiving it back?

A

ping

40
Q

What is the easiest way to verify that name resolution is functioning properly on a TCP/IP network?

A

Ping the source host with its computer name.

41
Q

You work as a technician for Tech Perfect Inc. You are troubleshooting an Internet name resolution issue. You ping your ISP’s DNS server address and find that the server is down. You want to continuously ping the DNS address until you have stopped the command. Which of the following commands will you use?

A

ping -t

42
Q

Which of the following utilities is used to verify the existence of a host in a network?

A

ping

43
Q

Accessing command prompt

A
  1. Click Start > All Programs > Accessories > Command Prompt. The uCertify terminal Simulator command prompt is displayed in its own window.
  2. Close the terminal window.
44
Q

Identifying TCP/IP commands

A

ipconfig: Displays information pertaining to your network adapter, namely TCP/IP configurations.
•ping: Tests the existence of other hosts on the network.
•netstat: Displays active TCP (or UDP) connections.
•nbtstat: Displays NetBIOS over TCP/IP statistics for local and remote computers.
•tracert: Shows paths to a destination on another network by pinging each step along the way three times

45
Q

Analyzing domain names with nslookup

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. nslookup google.com; displays google.com’s corresponding IP address, which is an external domain.
    ii. nslookup ucertify.com; displays the corresponding IP address of ucertify.com, which is an internal domain.
    iii. nslookup; shows Default server as Unknown and IP Address as 193.168.1.1 and brings you to the nslookup shell where you can enact more commands.
    iv. ?; displays the various commands you can use in the nslookup shell.
    v. exit; exits the nslookup shell program.
    vi. exit; closes the command prompt window.
46
Q

Using the netsh command

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. netsh /?; displays the help file which shows the basic syntax for the netsh command and the first-level commands that can be run within the netsh shell.
    ii. netsh; allows you to access the netsh shell.
    iii. interface; brings you to the netsh interface shell.
    iv. quit; exits the netsh shell.
    v. exit; closes the command prompt window.
47
Q

Using the net command

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. net; displays various options, such as view, user, session, start, stop, etc., which can help you analyze networking configurations and make modifications.
    ii. net view; shows the computers on your immediate network, whether they operate as a workgroup or a domain.
    iii. net time \UC-SERVER; displays the current time of the computer.
    iv. net user; displays the user accounts on the computer.
    v. exit; closes the command prompt window
48
Q

Displaying IP addresses and MAC address

A
  1. Click Start > Run to open the Run console.
  2. Type cmd and click OK to open the command prompt window.
  3. At command prompt, type the following commands and press Enter:
    i. ipconfig /all; the MAC address is actually listed as a physical address in the results.
    ii. arp -a; displays the IP addresses and the corresponding MAC addresses of the remote computers.
    iii. exit; closes the command prompt window.
49
Q

Understanding the ipconfig command

A
  1. Click Start > Run to open the Run console.
  2. Type cmd and click OK to open the command prompt window.
  3. At command prompt, type the following commands and press Enter:
    i. ipconfig; displays information pertaining to your network adapter, namely TCP/IP configurations.
    ii. ipconfig /all; displays the full TCP/IP configuration for all adapters, whereas without this parameter, ipconfig displays only the IP address, subnet mask, and default gateway values for each adapter.
    iii. ipconfig /?; displays the help file for ipconfig. It describes the ipconfig command and its various options.
    iv. exit; closes the command prompt window.
50
Q

Configuring DNS information

A

1.Open the command prompt window. (Click Start > Run, type cmd and click OK).
2.At command prompt, type the following commands and press Enter:
•ipconfig /displaydns; displays Domain Name System records for the client computer, including localhost connections.
•ipconfig /flushdns; empties the DNS cache.
•ipconfig /registerdns; registers the computer with the nearest DNS server.
•exit; closes the command prompt window.

51
Q

Releasing and renewing an IP address

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. ipconfig /release; releases any IP configurations received from a DHCP server.
    ii. ipconfig /renew; retrieves an IP address and other IP configurations. This should reconfigure the computer with the same IP address it used before.
    iii. exit; closes the command prompt window.
52
Q

Testing the existence of other hosts

A
  1. Open the command prompt window. (Click Start > Run, type cmd and click OK.)
  2. At command prompt, type the following commands and press Enter:
    i. ping /?; displays the help file for the ping command.
    ii. ping localhost; helps determine if the computer can send information out and receive the information back from itself.
    iii. ping loopback; tests if the TCP/IP protocol is functioning properly on your machine.
    iv. ping 127.0.0.1; observes that the results do not include any hostname resolution information. When pinging 127.0.0.1, no traffic is placed on the network segment; rather, all traffic is kept inside the computer or local loopback.
    v. exit; closes the command prompt window.
53
Q

Analyzing network paths with tracert

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. tracert; displays the help file for the tracert command.
    ii. tracert google.com; displays the path from the local computer all the way to the network device with the hostname www.google.com.
    iii. tracert -d google.com; runs the same trace as previous, but it does so numerically.
    iv. exit; closes the command prompt window.
54
Q

Analyzing network paths with pathping

A
  1. Open the command prompt window.
  2. At command prompt, type the following commands and press Enter:
    i. pathping; displays the help file for the pathping command.
    ii. pathping google.com; displays information about all the steps along the path to the website you want to test. Pathping is similar to tracert but it will also compute the degree of packet loss.
    iii. pathping -n google.com; prevents name resolution in the way that tracert -d does. This can display the results faster than the standard pathping command.
    iv. exit; closes the command prompt window.
55
Q

Analyzing the TCP/IP configuration with netstat

A

1.Open the command prompt window. (Click Start > Run, type cmd and click OK).
2.At command prompt, type the following commands and press Enter:
i.netstat; displays active TCP (or UDP) connections, as well as a host of other statistics.
ii.netstat -a; displays TCP and UDP connections.
iii.netstat -an; displays TCP and UDP connections in the numeric format.
iv.netstat -e; displays Ethernet statistics, such as the number of packets and bytes sent and received.
v.netstat -r; displays the route table.
vi.netstat -s; displays statistics per protocol, such as TCP, UDP, ICMP, IP, and so on.
•exit; closes the command prompt window.

56
Q

Installing Telnet

A
  1. Click Start > Administrative Tools; click Server Manger to open its dashboard.
  2. Click Add roles and features to start the wizard; click Next to advance to the Installation Type step.
  3. Verify that the “Role-based or feature-based installation” option is selected, and click Next to advance to the Server Selection step.
  4. Verify that “Select a server from the server pool” is selected, and click Next to advance to the Server Roles step; click Next to advance to the Features step.
  5. Scroll down in the Features list, check Telnet Client and Telnet Server, and click Next to advance to the Confirmation step.
  6. Click Install to install the selected features.
  7. When the installation completes, click Close.
  8. Close all the windows.

Networking Fundamentals (21 decks)

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