Cisco 100-150 Online Practice Questions and Exam Preparation

Cisco 100-150 Online Questions & Answers

• Question 31:

  Which two statements are true about the IPv4 address of the default gateway configured on a host? (Choose 2.) Note: You will receive partial credit for each correct selection.

  A. The IPv4 address of the default gateway must be the first host address in the subnet.
  B. The same default gateway IPv4 address is configured on each host on the local network.
  C. The default gateway is the Loopback0 interface IPv4 address of the router connected to the same local network as the host.
  D. The default gateway is the IPv4 address of the router interface connected to the same local network as the host.
  E. Hosts learn the default gateway IPv4 address through router advertisement messages.
  B. The same default gateway IPv4 address is configured on each host on the local network.
  D. The default gateway is the IPv4 address of the router interface connected to the same local network as the host.

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  Explanation

  Statement B: "The same default gateway IPv4 address is configured on each host on the local network." This is true because all hosts on the same local network (subnet) use the same default gateway IP address to send packets destined for other networks.

  Statement D: "The default gateway is the IPv4 address of the router interface connected to the same local network as the host." This is true because the default gateway is the IP address of the router's interface that is directly connected to the local network.

  Statement A: "The IPv4 address of the default gateway must be the first host address in the subnet." This is not necessarily true. The default gateway can be any address within the subnet range.

  Statement C: "The default gateway is the Loopback0 interface IPv4 address of the router connected to the same local network as the host." This is not true; the default gateway is the IP address of the router's physical or logical interface connected to the local network.

  Statement E: "Hosts learn the default gateway IPv4 address through router advertisement messages." This is generally true for IPv6 with Router Advertisement (RA) messages, but not typically how IPv4 hosts learn the default gateway address.

• Question 32:

  A help desk technician receives the four trouble tickets listed below. Which ticket should receive the highest priority and be addressed first?

  A. Ticket 1: A user requests relocation of a printer to a different network jack in the same office. The jack must be patched and made active.
  B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.
  C. Ticket 3: A user reports that response time for a cloud-based application is slower than usual.
  D. Ticket 4: Two users report that wireless access in the cafeteria has been down for the last hour.
  B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.

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  Explanation

  When prioritizing trouble tickets, the most critical issues affecting business operations or high-impact activities should be addressed first. Here's a breakdown of the tickets:

  Ticket 1: Relocation of a printer, while necessary, is not urgent and does not impact critical operations.

  Ticket 2: An ongoing webinar losing internet access is critical, especially if the webinar is time- sensitive and involves multiple participants.

  Ticket 3: Slower response time for a cloud-based application is important but typically not as urgent as a complete loss of internet access for a live event.

  Ticket 4: Wireless access down in the cafeteria affects users but does not have the same immediate impact as a live webinar losing connectivity.

• Question 33:

  Which command will display all the current operational settings configured on a Cisco router?

  A. show protocols
  B. show startup-config
  C. show version
  D. show running-config
  D. show running-config

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  Explanation

  The show running-config command is used on a Cisco router to display the current operational settings that are actively configured in the router's RAM. This command outputs all the configurations that are currently being executed by the router, which includes interface configurations, routing protocols, access lists, and other settings. Unlike show startup-config, which shows the saved configuration that the router will use on the next reboot, show running-config reflects the live, current configuration in use.

• Question 34:

  DRAG DROP

  Move the MFA factors from the list on the left to their correct examples on the right. You may use each factor once, more than once, or not at all.

  Note: You will receive partial credit for each correct selection.

  Select and Place:

  

  

  Explanation

  Entering a one-time security code sent to your device after logging in: Possession

  Holding your phone to your face to be recognized: Inherence

  Specifying your user name and password to log on to a service: Knowledge

  Here's why each factor matches the example:

  Possession: This factor is something the user has, like a mobile device. A one-time security code sent to this device falls under this category.

  Inherence: This factor is something the user is, such as a biometric characteristic. Facial recognition using a phone is an example of this factor.

  Knowledge: This factor is something the user knows, like a password or PIN.

  Multi-Factor Authentication (MFA) enhances security by requiring two or more of these factors to verify a user's identity before granting access.

  Entering a one-time security code sent to your device after logging in.

  Factor: Possession

  This factor relates to something you have, such as a device that receives a security code.

  Holding your phone to your face to be recognized.

  Factor: Inference (typically referred to as Inherence or Biometric)

  This factor relates to something you are, such as biometric authentication like facial recognition.

  Specifying your username and password to log on to a service.

  Factor: Knowledge

  This factor relates to something you know, such as a username and password.

  Possession Factor: This involves something the user has in their possession. Receiving a one-time security code on a device (e.g., phone) is an example of this.

  Inference Factor (Inherence/Biometric): This involves something inherent to the user, such as biometric verification (e.g., facial recognition or fingerprint scanning).

  Knowledge Factor: This involves something the user knows, such as login credentials (username and password).

  References:

  Multi-Factor Authentication (MFA) Explained: MFA Guide

  Understanding Authentication Factors: Authentication Factors

• Question 35:

  Which protocol allows you to securely upload files to another computer on the internet?

  A. SFTP
  B. ICMP
  C. NTP
  D. HTTP
  A. SFTP

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  Explanation

  SFTP, or Secure File Transfer Protocol, is a protocol that allows for secure file transfer capabilities between networked hosts. It is a secure extension of the File Transfer Protocol (FTP). SFTP encrypts both commands and data, preventing passwords and sensitive information from being transmitted openly over the network. It is typically used for secure file transfers over the internet and is built on the Secure Shell (SSH) protocol.

• Question 36:

  Which two pieces of information should you include when you initially create a support ticket? (Choose 2.)

  A. A detailed description of the fault
  B. Details about the computers connected to the network
  C. A description of the conditions when the fault occurs
  D. The actions taken to resolve the fault
  E. The description of the top-down fault-finding procedure
  A. A detailed description of the fault
  C. A description of the conditions when the fault occurs

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  Explanation

  Statement A: "A detailed description of the fault." This is essential for support staff to understand the nature of the problem and begin troubleshooting effectively.

  Statement C: "A description of the conditions when the fault occurs." This helps in reproducing the issue and identifying patterns that might indicate the cause of the fault.

  Statement B: "Details about the computers connected to the network." While useful, this is not as immediately critical as understanding the fault itself and the conditions under which it occurs.

  Statement D: "The actions taken to resolve the fault." This is important but typically follows the initial report.

  Statement E: "The description of the top-down fault-finding procedure." This is more of a troubleshooting methodology than information typically included in an initial support ticket.

  References:

  Best Practices for Submitting Support Tickets: Support Ticket Guidelines

• Question 37:

  HOTSPOT

  You purchase a new Cisco switch, turn it on, and connect to its console port. You then run the following command:

  

  For each statement about the output, select True or False. Note: You will receive partial credit for each correct selection.

  

  

  Explanation

  The two interfaces are administratively shut down:

  False: The output does not show any "shutdown" command under the interfaces, which would indicate that they are administratively shut down. Therefore, they are likely in their default state, which is administratively up.

  The two interfaces have default IP addresses assigned:

  False: The output does not show any IP address configuration. In the default state, interfaces do not have IP addresses assigned unless explicitly configured.

  The two interfaces can communicate over Layer 2:

  True: By default, interfaces on a switch are Layer 2 interfaces capable of forwarding Ethernet frames. As there is no configuration provided that changes this, it can be assumed they can communicate over Layer 2. Interface Status: The absence of the "shutdown" command means the interfaces are not administratively shut down.

  IP Address Assignment: There is no evidence in the output that IP addresses have been assigned to the interfaces, which would typically be shown as "ip address" entries.

  Layer 2 Communication: Switch interfaces in their default state operate at Layer 2, enabling them to forward Ethernet frames and participate in Layer 2 communication.

  References: Cisco IOS Interface Configuration: Cisco Interface Configuration Understanding Cisco Switch Interfaces: Cisco Switch Interfaces

• Question 38:

  Which two layers of the OSI model are combined into a single layer in the TCP/IP model? (Choose 2.)

  A. Application
  B. Transport
  C. Network
  D. Data Link
  E. Presentation
  F. Session
  A. Application
  E. Presentation

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  Explanation

  In the TCP/IP model, the Application layer encompasses the functions of the OSI model's Application, Presentation, and Session layers. The Transport and Network layers remain the same, while the Data Link and Physical layers are combined into a single layer called the Network Access layer.

• Question 39:

  DRAG DROP

  Move each protocol from the list on the left to the correct TCP/IP model layer on the right.

  Note: You will receive partial credit for each correct match.

  Select and Place:

  

  

  Explanation

  TCP (Transmission Control Protocol): This protocol belongs to the Transport layer, which is responsible for providing communication between applications on different hosts.

  IP (Internet Protocol): IP is part of the Internetwork layer, which is tasked with routing packets across network boundaries to their destination1. FTP (File Transfer Protocol): FTP operates at the Application layer, which supports application and end- user processes. It is used for transferring files over the network.

  Ethernet: While not a protocol within the TCP/IP stack, Ethernet is associated with the Network Interface layer, which corresponds to the link layer of the TCP/IP model and is responsible for the physical transmission of data.

  The TCP/IP model layers are designed to work collaboratively to transmit data from one layer to another, with each layer having specific protocols that perform functions necessary for the data transmission process.

  TCP:

  TCP Model Layer: Transport

  The Transport layer is responsible for end-to-end communication and error handling. TCP (Transmission Control Protocol) operates at this layer to provide reliable, ordered, and error-checked delivery of data.

  IP:

  TCP Model Layer: Internetwork

  The Internetwork layer, also known as the Internet layer, is responsible for logical addressing and routing. IP (Internet Protocol) operates at this layer to route packets across networks.

  FTP:

  TCP Model Layer: Application

  The Application layer provides network services to applications. FTP (File Transfer Protocol) operates at this layer to transfer files between computers over a network.

  Ethernet:

  TCP Model Layer: Network

  The Network layer, also known as the Link layer in the TCP/IP model, is responsible for physical addressing and access to the physical medium. Ethernet operates at this layer to provide the physical and data link functions.

  Transport Layer: This layer is responsible for providing communication services directly to the application processes running on different hosts. TCP is a core protocol in this layer.

  Internetwork Layer: This layer is responsible for logical addressing, routing, and packet forwarding.

  IP is the primary protocol for this layer.

  Application Layer: This layer interfaces directly with application processes and provides common network services. FTP is an example of a protocol operating in this layer.

  Network Layer: In the TCP/IP model, this layer includes both the data link and physical layers of the OSI model. Ethernet is a protocol used in this layer to define network standards and communication protocols at the data link and physical levels.

  References:

  TCP/IP Model Overview: Cisco TCP/IP Model

  Understanding the TCP/IP Model: TCP/IP Layers

• Question 40:

  Which wireless security option uses a pre-shared key to authenticate clients?

  A. WPA2-Personal
  B. 802.1x
  C. 802.1q
  D. WPA2-Enterprise
  A. WPA2-Personal

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  Explanation

  WPA2-Personal, also known as WPA2-PSK (Pre-Shared Key), is the wireless security option that uses a pre- shared key to authenticate clients. This method is designed for home and small office networks and doesn't require an authentication server. Instead, every user on the network uses the same key or passphrase to connect.