Cisco 100-150 Online Practice Questions and Exam Preparation

Cisco 100-150 Online Questions & Answers

• Question 11:

  What is the purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch?

  A. To enable the switch to act as a default gateway for the attached devices
  B. To enable the switch to resolve URLs for the attached the devices
  C. To enable the switch to provide DHCP services to other switches in the network
  D. To enable access to the CLI on the switch through Telnet or SSH
  D. To enable access to the CLI on the switch through Telnet or SSH

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  Explanation

  The primary purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch is to facilitate remote management of the switch. By configuring an IP address on the management VLAN, network administrators can access the switch's Command Line Interface (CLI) remotely using protocols such as Telnet or Secure Shell (SSH). This allows for convenient configuration changes, monitoring, and troubleshooting without needing physical access to the switch.

• Question 12:

  HOTSPOT

  Computers in a small office are unable to access companypro.net. You run the ipconfig command on one of the computers. The results are shown in the exhibit.

  You need to determine if you can reach the router.

  

  Which command should you use? Complete the command by selecting the correct options from each drop- down lists.

  

  

  Explanation

  To determine if you can reach the router, you should use the ping command followed by the IP address of the router. The ping command is a network utility used to test the reachability of a host on an Internet Protocol (IP) network and to

  measure the round-trip time for messages sent from the originating host to a destination computer.

  28 of 49

  The Default Gateway in the ipconfig results is typically the router's IP address in a home or small office network. In this case, the Default Gateway is 192.168.0.1 , which is the address you would ping to check connectivity to the router.

  How to Use the Ping Command

  Testing Network Connectivity with the Ping Command

  To determine if you can reach the router, you should use the ping command with the IP address of the router.

  Command: ping

  Target: 192.168.0.1

  So, the completed command is:

  ping 192.168.0.1

  Step by Step Comprehensive and Detailed Explanation:

  ping: The ping command sends ICMP Echo Request messages to the target IP address and waits for an Echo Reply. It is commonly used to test the reachability of a network device.

  192.168.0.1: This is the IP address of the default gateway (the router) as shown in the ipconfig output. Pinging this address will help determine if the computer can communicate with the router.

  References:

  Using the ping Command: ping Command Guide

• Question 13:

  DRAG DROP Move each cloud computing service model from the list on the left to the correct example on the right Note: You will receive partial credit for each correct answer.

  Select and Place:

  

  

  Explanation

  Three virtual machines are connected by a virtual network in the cloud.

  Model: IaaS (Infrastructure as a Service)

  IaaS provides virtualized computing resources over the internet, including virtual machines, storage, and networks.

  Users access a web-based graphics design application in the cloud for a monthly fee.

  Model: SaaS (Software as a Service)

  SaaS delivers software applications over the internet, typically on a subscription basis, accessible via a web browser.

  A company develops applications using cloud-based resources and tools.

  Model: PaaS (Platform as a Service)

  PaaS provides a platform allowing customers to develop, run, and manage applications without dealing with the infrastructure.

  IaaS (Infrastructure as a Service): Provides virtualized hardware resources that customers can use to build their own computing environments.

  PaaS (Platform as a Service): Offers a platform with tools and services to develop, test, and deploy applications.

  SaaS (Software as a Service): Delivers fully functional applications over the internet that users can access and use without managing the underlying infrastructure.

  References:

  Cloud Service Models: Understanding IaaS, PaaS, SaaS

  NIST Definition of Cloud Computing: NIST Cloud Computing

• Question 14:

  Examine the connections shown in the following image. Move the cable types on the right to the appropriate connection description on the left. You may use each cable type more than once or not at all.

  

  A. Please check the answer in the explanation
  B. PlaceHolder
  C. PlaceHolder
  D. PlaceHolder
  A. Please check the answer in the explanation

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  Explanation

  Based on the image description provided, here are the cable types matched with the appropriate connection descriptions:

  Connects Switch S1 to Router R1 Gi0/0/1 interface Cable Type : = Straight-through UTP Cable

  Connects Router R2 Gi0/0/0 to Router R3 Gi0/0/0 via underground conduit Cable Type : = Fiber Optic Cable

  Connects Router R1 Gi0/0/0 to Router R2 Gi0/0/1 Cable Type : = Crossover UTP Cable

  Connects Switch S3 to Server0 network interface card Cable Type : = Straight-through UTP Cable

  The choices are based on standard networking practices where:

  Straight-through UTP cables are typically used to connect a switch to a router or a network interface card.

  Fiber optic cables are ideal for long-distance, high-speed data transmission, such as connections through an underground conduit.

  Crossover UTP cables are used to connect similar devices, such as router-to-router connections.

  These matches are consistent with the color-coded cables in the image: green for switch connections, yellow for router-to-router connections within the same rack, and blue for inter-rack connections. The use of these cables follows the

  Ethernet cabling standards.

  Connects Switch S1 to Router R1 Gi0/0/1 interface:

  Cable Type: Straight-through UTP Cable

  A straight-through UTP cable is typically used to connect different types of devices, such as a switch to a router.

  Connects Router R2 Gi0/0/0 to Router R3 Gi0/0/0 via underground conduit:

  Cable Type: Fiber Optic Cable

  Fiber optic cables are used for long-distance connections, such as those through an underground conduit between buildings.

  Connects Router R1 Gi0/0/0 to Router R2 Gi0/0/1:

  Cable Type: Crossover UTP Cable

  A crossover UTP cable is typically used to connect similar devices directly, such as router to router connections.

  Connects Switch S3 to Server0 network interface card:

  Cable Type: Straight-through UTP Cable

  A straight-through UTP cable is typically used to connect a switch to an end device, such as a server.

  Straight-through UTP Cable: Used to connect different devices (e.g., switch to router, switch to server).

  Crossover UTP Cable: Used to connect similar devices directly (e.g., router to router, switch to switch).

  Fiber Optic Cable: Used for long-distance and high-speed connections, often between buildings or data centers.

  References:

  Network Cable Types and Uses: Cisco Network Cables

  Understanding Ethernet Cabling: Ethernet Cable Guide

• Question 15:

  An engineer configured a new VLAN named VLAN2 for the Data Center team. When the team tries to ping addresses outside VLAN2 from a computer in VLAN2, they are unable to reach them. What should the engineer configure?

  A. Additional VLAN
  B. Default route
  C. Default gateway
  D. Static route
  C. Default gateway

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  Explanation

  When devices within a VLAN are unable to reach addresses outside their VLAN, it typically indicates that they do not have a configured path to external networks. The engineer should configure a default gateway for VLAN. The default gateway is the IP address of the router's interface that is connected to the VLAN, which will route traffic from the VLAN to other networks

• Question 16:

  Which protocol is responsible for dynamically resolving MAC addresses from IP addresses?

  A. ICMP
  B. ARP
  C. RIP
  D. BGP
  B. ARP

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  Explanation

  The Address Resolution Protocol (ARP) is used to dynamically map an IP address to a MAC address within a local network.

• Question 17:

  DRAG DROP

  Move the security options from the list on the left to its characteristic on the right. You may use each security option once, more than once, or not at all.

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

  Select and Place:

  

  

  Explanation

  WPA2-Enterprise: Uses a RADIUS server for authentication

  WEP: Uses a minimum of 40 bits for encryption

  WPA2-Personal: Uses AES and a pre-shared key for authentication

  Here's why each security option matches the characteristic:

  WPA2-Enterprise uses a RADIUS server for authentication, which provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service.

  WEP (Wired Equivalent Privacy) is an outdated security protocol that uses a minimum of 40 bits for encryption (and up to 104 bits), which is relatively weak by today's standards.

  WPA2-Personal (Wi-Fi Protected Access 2 - Personal) uses the Advanced Encryption Standard (AES) for encryption and a pre-shared key (PSK) for authentication, which is shared among users to access the network.

  These security options are essential for protecting wireless networks from unauthorized access and ensuring data privacy.

• Question 18:

  DRAG DROP

  Move each protocol from the list on the left to its correct example on the right.

  Select and Place:

  

  

  Explanation

  DHCP: Assign the reserved IP address 10.10.10.200 to a web server at your company.

  DNS: Perform a query to translate companypro.net to an IP address.

  ICMP: Perform a ping to ensure that a server is responding to network connections.

  Here's how each protocol corresponds to its example:

  DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses to devices on a network. In this case, DHCP would be used to assign the reserved IP address 10.10.10.200 to a web server.

  DNS (Domain Name System) is used to translate domain names into IP addresses. Therefore, to translate companypro.net to an IP address, DNS would be utilized.

  ICMP (Internet Control Message Protocol) is used for sending error messages and operational information indicating success or failure when communicating with another IP address. An example of this is using the ping command to check if a server is responding to network connections.

  These protocols are essential for the smooth operation of networks and the internet.

  Perform a query to translate companypro.net to an IP address.

  DNS (Domain Name System): DNS is used to resolve domain names to IP addresses.

  Assign the reserved IP address 10.10.10.200 to a web server at your company.

  DHCP (Dynamic Host Configuration Protocol): DHCP is used to assign IP addresses to devices on a network.

  Perform a ping to ensure that a server is responding to network connections.

  ICMP (Internet Control Message Protocol): ICMP is used by network devices to send error messages and operational information, and it is the protocol used by the ping command.

  DNS (Domain Name System): DNS translates human-friendly domain names like "companypro.net" into IP addresses that computers use to identify each other on the network.

  DHCP (Dynamic Host Configuration Protocol): DHCP automatically assigns IP addresses to devices on a network, ensuring that no two devices have the same IP address.

  ICMP (Internet Control Message Protocol): ICMP is used for diagnostic or control purposes, and the ping command uses ICMP to test the reachability of a host on an IP network.

  References:

  DNS Basics: What is DNS?

  DHCP Overview: What is DHCP?

  ICMP and Ping: Understanding ICMP

• Question 19:

  HOTSPOT

  You plan to use a network firewall to protect computers at a small office.

  For each statement about firewalls, select True or False.

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

  

  

  Explanation

  A firewall can direct all web traffic to a specific IP address.

  True: Firewalls can be configured to perform Network Address Translation (NAT) and port forwarding, which can direct all web traffic (typically on port 80 and 443) to a specific internal IP address.

  A firewall can block traffic to specific ports on internal computers.

  True: Firewalls can be configured with access control lists (ACLs) or rules to block traffic to specific ports on internal computers, enhancing security by restricting unwanted or harmful traffic.

  A firewall can prevent specific apps from running on a computer.

  False: Firewalls typically control traffic flow and do not prevent specific applications from running on a computer. Application control is usually managed by endpoint security software or application control systems.

  Directing Web Traffic: Firewalls can manage traffic redirection using NAT and port forwarding rules to route web traffic to designated servers or devices within the network.

  Blocking Specific Ports: Firewalls can enforce security policies by blocking or allowing traffic based on port numbers, ensuring that only permitted traffic reaches internal systems.

  Application Control: While firewalls manage network traffic, preventing applications from running typically requires software specifically designed for endpoint protection and application management.

  References:

  Understanding Firewalls: Firewall Capabilities

  Network Security Best Practices: Network Security Guide

• Question 20:

  You want to store files that will be accessible by every user on your network. Which endpoint device do you need?

  A. Access point
  B. Server
  C. Hub
  D. Switch
  B. Server

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  Explanation

  To store files that will be accessible by every user on a network, you would need a server . A server is a computer system that provides data to other computers. It can serve data to systems on a local network (LAN) or a wide network (WAN) over the internet. In this context, a file server would be set up to store and manage files, allowing users on the network to access them from their own devices.