100-150 Online Practice Questions

Explanation:
The correct matching of the protocols to their examples is as follows:
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.
Reference: DNS Basics: What is DNS?
DHCP Overview: What is DHCP?
ICMP and Ping: Understanding ICMP

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.
Reference: Cloud Service Models: Understanding IaaS, PaaS, SaaS
NIST Definition of Cloud Computing: NIST Cloud Computing

Explanation:
The command that will display the output provided, which includes capability codes, local interface details, device IDs, hold times, and platform port ID capabilities, is the show cdp neighbor command. This command is used in Cisco devices to display current information about neighboring devices detected by Cisco Discovery Protocol (CDP), which includes details such as the interface through which the neighbor is connected, the type of device, and the port ID of the device1.
Reference: =
• Cisco - show cdp neighbors
The provided output is from the Cisco Discovery Protocol (CDP) neighbor table. The show cdp neighbor command displays information about directly connected Cisco devices, including Device ID, Local Interface, Holdtime, Capability, Platform, and Port ID.
• A. show mac-address-table: Displays the MAC address table on the switch.
• C. show inventory: Displays information about the hardware inventory of the device.
• D. show ip interface: Displays IP interface status and configuration.
Thus, the correct answer is B. show cdp neighbor.
Reference: =
• Cisco CDP Neighbor Command
• Understanding CDP

Explanation:
Two home office computers are connected to a switch by Ethernet cables.
Network Type: LAN (Local Area Network)
A LAN connects devices within a limited area such as a home, office, or building, using Ethernet cables or Wi-Fi.
Three government buildings in the same city connect to a cable company over coaxial cables. Network Type: MAN (Metropolitan Area Network)
A MAN connects networks across a city or campus, often using fiber optic or coaxial cables.
A cell phone connects to a Bluetooth headset.
Network Type: PAN (Personal Area Network)
A PAN connects devices within a personal workspace, typically using wireless technologies like Bluetooth.
A financial institution connects its branches through a telecommunications service provider. Network Type: WAN (Wide Area Network)
A WAN connects multiple LANs over long distances, often using leased lines or satellite links provided by telecommunications companies.
LAN (Local Area Network): Used for connecting devices within a small geographical area such as a single building or home.
MAN (Metropolitan Area Network): Covers a larger geographical area than a LAN, typically a city or campus.
PAN (Personal Area Network): Connects devices within the range of an individual person, such as connecting a phone to a Bluetooth headset.
WAN (Wide Area Network): Spans large geographical areas, connecting multiple LANs across cities, countries, or continents.
Reference: Network Types Overview: Cisco Networking Basics
Understanding Different Network Types: Network Types Guide

Explanation:
IPv6 addresses can be compressed by removing leading zeros and replacing consecutive groups of zeros with a double colon (::). Here’s how to compress the address 2001:0db8:0000:0016:0000:001b:2000:0056:
Remove leading zeros from each segment:
2001:db8:0000:0016:0000:001b:2000:0056 becomes 2001:db8:0:16:0:1b:2000:56
Replace the longest sequence of consecutive zeros with a double colon (::). In this case, the two consecutive zeros between the 16 and 1b:
2001:db8:0:16::1b:2000:56
Thus, the most compressed valid format of the IPv6 address is 2001:db8:0:16::1b:2000:56.
Reference: =
Cisco Learning Network
IPv6 Addressing (Cisco)