Networking Fundamentals Quiz

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Questions and Answers

Move each IP address from the list on the left to the correct IPv4 address class on the right. Note: You will receive partial credit for each correct selection.

Class C = 201.111.22.3 Class D = 224.100.20.3 Class A = 64.123.12.1 Class B = 133.234.23.2

A computer is connected to a switch through a network patch panel by using copper cable. The computer is getting lower than expected data speeds. Which two actions should you perform to identify the issue? (Choose 2.) Note: You will receive partial credit for each correct selection.

  • Test the data speed of the cable. (correct)
  • Use an optical time - domain reflectometer (OTDR) to test the line.
  • Tone the line from Unit A to Unit B.
  • Search for broken wires in the cable by using a cable tester. (correct)

The Internet is a WAN.

True (A)

An intranet is a WAN

<p>False (B)</p> Signup and view all the answers

All devices connected to a WAN must be located within the same city.

<p>False (B)</p> Signup and view all the answers

In Linux, which command - line tool should you use to list a host’s active incoming connections?

<p>Netstat (B)</p> Signup and view all the answers

A client-server network has centralized administration

<p>True (A)</p> Signup and view all the answers

A client-server network requires users to have a user account on every computer they need to use.

<p>False (B)</p> Signup and view all the answers

A client-server network requires each computer to share its resources.

<p>False (B)</p> Signup and view all the answers

Allows a remote user to connect to a private network from anywhere on the internet.

<p>SSL VPN</p> Signup and view all the answers

Securely connects two portions of a provide network or two private networks.

<p>Site-to-Site VPN</p> Signup and view all the answers

Creates an unencrypted connection between two network devices.

<p>Layer 2 Tunneling Protocol</p> Signup and view all the answers

A Type 1 hypervisor runs directly on system hardware

<p>True (A)</p> Signup and view all the answers

A Type 2 hypervisor runs directly on system hardware

<p>False (B)</p> Signup and view all the answers

A Type 1 hypervisor is also known as a bane-metal hypervisor.

<p>True (A)</p> Signup and view all the answers

What is the justification for using STP cable instead of UTP cable to write a network expansion?

<p>You are routing cables through an area with high external interference. (A)</p> Signup and view all the answers

What are two characteristics of VLANs? (Choose 2.)

<p>VLANs act as though they are on the same LAN regardless of physical location. (A), A VLAN compartmentalizes a network and isolates traffic. (C)</p> Signup and view all the answers

Connection less, message-based protocol with best-effort service

<p>UDP</p> Signup and view all the answers

Connection-oriented protocol with guaranteed service

<p>TCP</p> Signup and view all the answers

Resolves a MAC address to an IP address

<p>ARP</p> Signup and view all the answers

You are trying to access a music-sharing service on the internet. The service is located at the IP address 173.194.75.105. You experience problems connecting. You run and receive the output shown in the image. Evaluate the image and complete the statement by selecting the correct options from the drop-down lists. Note: You will receive partial credit for each correct selection.

<h1>Each hop in the trace route is a = router.</h1> <p>= The trace route completed = with an unknown status.</p> Signup and view all the answers

You ping a server by using the fully qualified domain range (FQDN) and do not receive a response. You then ping the same server by using its IP address and receive a response. Why do you receive a response on the second attempt but not on the first attempt?

<p>The DNS is not resolving.</p> Signup and view all the answers

You are a network administrator at a small business. An employee is not able to access any websites. No other employees are having this problem. You need to troubleshoot the problem. Which three actions should you complete?(Choose 3.)

<p>Check to see if the router is working properly. (B), Determine whether the employee’s computer has a valid IP address (C), Contact the internet service provider (D)</p> Signup and view all the answers

CompanyPro plans to migrate several to cloud-based virtual machines. You need to identify the administrative responsibilities that will be reduced after the planned migration. Which two responsibilities will be reduced? (Choose 2.) Note: You will receive partial credit for each correct selection.

<p>Replacing failed server hardware (B), Managing physical server security (E)</p> Signup and view all the answers

What happens when a client’s DHCP - issued address expires?

<p>The client attempts to renew its release on the address. (D)</p> Signup and view all the answers

A switch sends unicast frames to only one destination port.

<p>True (A)</p> Signup and view all the answers

A switch floods ports if it does not know where to send a frame

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

You are a network support technician. The company president reports that his wired network printer is not working. To test the line, you need to know where the jack is plugged into the patch panel However, there are no labels. In the main distribution frame (MDF), you discover a bundle of 35 cables Which tool should you use to isolate the correct cable?

<p>Toner (D)</p> Signup and view all the answers

You are a network support technician at an internet service provider (ISP) You receive a call from a customer indicating that they cannot access the internet. You need to troubleshoot the problem.

<p>Ask the customer to check for the appropriate status lights on the modem. (D), Perform a line test to check connectivity between the ISP and the customer (B), Ask the customer to reatart the modem (E)</p> Signup and view all the answers

On a Windows computer, which utility should you use to determine whether your Domain Name System (DNS) service is properly resolving fully qualified domain names (FQDNS) to IP addresses?

<p>Nslookup (D)</p> Signup and view all the answers

is a vast computer network linking smaller computer networks worldwide

<p>Internet</p> Signup and view all the answers

is a network that allows secure collaboration between a company and a supplier or partner

<p>Extranet</p> Signup and view all the answers

is a private network that is accessible only to a company's employees

<p>Intranet</p> Signup and view all the answers

In which range are IPv4 multicast addresses?

<p>From 224.0.0.0 to 239 255 255 255 (D)</p> Signup and view all the answers

What are two characteristics of a mesh network topology? (Choose 2)

<p>Every node connects to every other node on the network (B), It is fault tolerant because of redundant connections (D)</p> Signup and view all the answers

What is a cause of concern about wireless network security?

<p>Inability to encrypt transmissions (C)</p> Signup and view all the answers

Which physical network topology provides fault-tolerant communication by providing redundant communication paths?

<p>Mesh (B)</p> Signup and view all the answers

Which media type is least susceptible to external interference including EMI and RFI?

<p>Fiber optic (C)</p> Signup and view all the answers

Which option represents an IPv6 loop back address?

<p>::1 (D)</p> Signup and view all the answers

What is the primary purpose of a perimeter network?

<p>To provide a buffer area between a private intranet and the public internet (C)</p> Signup and view all the answers

How is a router's static routing table updated?

<p>Through direct action by the network administrator (D)</p> Signup and view all the answers

Which network element uses a tunneling protocol to encapsulate data for transmission?

<p>VPN (B)</p> Signup and view all the answers

You are a network administrator at a small business. One morning at the start of business, you realize that no employees at the company can access external websit access intranet sites. All computers are on the same intranet connected by a single router. You need to troubleshoot the problem Which two actions should you complete? (Choose 2)

<p>Check that each computer has a valid IP address. (B), Check the router for proper physical connectivity (A)</p> Signup and view all the answers

Your home computer is having problems accessing the internet. You suspect that your internet router's DHCP service is not functioning, so you check your computer's IP address Which address indicates that your router's DHCP service is NOT functioning?

<p>169 254 1.15 (A)</p> Signup and view all the answers

You work for a small office that has 15 computers. Your local ISP provides you with one public IP address. You need to enable internet access for all 15 computers. Which routing function should you enable?

<p>NAT (A)</p> Signup and view all the answers

Which type of port supports VLAN traffic between two switches?

<p>Trunk port (C)</p> Signup and view all the answers

Flashcards

Type 1 Hypervisor

A computer operating system that runs directly on bare-metal hardware, offering a layer of abstraction for running virtual machines (VMs).

Type 2 Hypervisor

A computer operating system that runs as an application on top of another operating system (host OS), providing a virtualized environment.

VPN

A technology that creates a secure connection over a public network, like the internet, enabling private data transmission between two endpoints.

SSL VPN

A type of VPN that uses the Secure Sockets Layer (SSL) protocol to encrypt communication between a remote user and a private network.

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Site-to-Site VPN

A type of VPN that connects two physically separate networks, often used to connect branch offices or data centers.

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Netstat

A command-line tool in Linux used to display active network connections, listening ports, and routing tables. It provides detailed information about network activity.

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STP Cable

A type of twisted-pair cable with a higher number of twists per inch, making it less susceptible to external interference.

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UDP (User Datagram Protocol)

A connectionless protocol that transmits data in the form of datagrams with no guarantee of delivery or order. It's fast and efficient for applications like streaming media.

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TCP (Transmission Control Protocol)

A connection-oriented protocol that establishes a reliable connection between devices, ensuring data delivery and order. It's used for applications requiring accuracy, like email and file transfer.

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ARP (Address Resolution Protocol)

A protocol that maps an Internet Protocol (IP) address to a physical address (MAC address) on a local network. It helps devices find each other on the network.

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Trace Route Output

A sequence of network hops, routers, that a data packet travels through from the source to the destination, revealing potential bottlenecks and network issues.

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DNS (Domain Name System)

A database that stores associations between domain names (like google.com) and their corresponding IP addresses.

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DNS Resolution Failure

An error where the DNS server cannot successfully resolve a domain name to an IP address, preventing communication to that site.

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Toner

A tool used to identify a specific cable within a bundle by sending a signal through it and detecting it with a handheld receiver.

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DHCP Address Expiration

A process where a client's IP address assigned by a DHCP server becomes invalid after a specified time, requiring the client to renew its address.

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Switch

A network device that forwards data packets based on their destination MAC addresses, allowing for efficient communication between devices on a network.

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Netstat (Windows)

A command-line utility used to view and analyze network connections, listening ports, and routing tables in a Windows operating system.

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Line Test

A troubleshooting technique that involves testing the physical connection between the ISP and the customer's network to identify any issues.

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Time-Domain Reflectometer (TDR)

A technique used to isolate a specific cable within a group by measuring the time it takes for a signal to travel to the end of the cable.

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Cloud Migration

The process of migrating server workloads and applications from physical infrastructure to virtualized environments in a cloud provider's data center.

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Restarting the Modem

A troubleshooting step that involves restarting the modem to refresh its connection and resolve potential network issues

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Intranet

A private network that is accessible only to a company's employees.

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Extranet

A network that allows secure collaboration between a company and a supplier or partner.

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Internet

A vast computer network linking smaller computer networks worldwide.

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Nslookup

A command-line tool used to query the Domain Name System (DNS) to find the IP address associated with a given hostname.

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Ipconfig

A command-line tool used to display and configure network interfaces in Windows.

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Mesh Network

A network topology where each node is connected to every other node, providing redundant paths for communication.

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Ring Network

A network topology where nodes are connected in a circular ring, with data flowing in one direction.

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Study Notes

Question 5 of 40

  • A computer connected to a switch with lower data speeds requires testing the cable speed and using an OTDR to test the line.
  • Cable testing involves checking for broken wires.

Question 2 of 40

  • The internet is a WAN.
  • An intranet is not a WAN.
  • Devices connected to a WAN are not necessarily in the same city.

Question 40 of 40

  • Netstat is used to list incoming connections in Linux.

Question 39 of 40

  • Client-server networks have centralized administration.
  • Client-server networks don't require each computer to share resources.
  • Client-server networks don't require every computer to have a user account.

Question 37 of 40

  • SSL VPN allows remote users to connect to a network over the internet.
  • Site-to-Site VPN securely connects network sections or private networks.
  • Layer 2 Tunneling Protocol creates an unencrypted connection between network devices.

Question 35 of 40

  • Type 1 hypervisors run directly on the system hardware.
  • Type 2 hypervisors do not run directly on system hardware.
  • Type 1 hypervisors are also known as bare-metal hypervisors.

Question 36 of 40

  • IPv4 address classes and example addresses are provided.

Question 31 of 40

  • Using STP (Shielded Twisted Pair) cable instead of UTP (Unshielded Twisted Pair) is justified due to high external interference.

Question 29 of 40

  • VLANs function as if they are on the same LAN regardless of location.
  • A single switch can service multiple VLANs.
  • VLANs compartmentalize a network and isolate traffic.

Question 30 of 40

  • UDP is a connectionless, message-based protocol with best-effort service.
  • TCP is a connection-oriented protocol with guaranteed service.
  • ARP resolves MAC addresses to IP addresses.

Question 28 of 40

  • Each hop in a trace route signifies a router.
  • Trace routes can complete with an unknown status.

Question 25 of 40

  • DNS resolution is necessary to receive responses when pinging a server by FQDN, otherwise it may fail.

Question 27 of 40

  • Ensure the router connects to the internet.
  • Verify the router is functioning correctly
  • Verify the employee's network adapter is working.

Question 23 of 40

  • Updating server operating systems will be reduced.
  • Replacing failed server hardware will be reduced.

Question 22 of 40

  • When a client's DHCP-issued address expires, the client requests a new address and attempts to renew it.

Question 14 of 40

  • Switches send unicast frames to a single destination port.
  • Switches flood ports if they don't know where to send a frame.
  • Switches do not send broadcast frames to only the uplink port.

Question 21 of 40

  • Time-domain reflectometer (TDR) is used for isolating cables in a bundle.

Question 9 of 40

  • Nslookup is used to determine DNS service resolution of fully qualified domain names to IP addresses.

Question 2 of 40

  • Network Address Translation (NAT) should be enabled for 15 computers on a single public IP address.

Question 3 of 40

  • A trunk port supports VLAN traffic between switches.

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