2025 New 100-150 Exam Questions Real Cisco Dumps
Course 2025 100-150 Test Prep Training Practice Exam Download
NEW QUESTION # 23
DRAG DROP
Move each protocol from the list on the left to its correct example on the right.
Answer:
Explanation:
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
NEW QUESTION # 24
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 default gateway is the Loopback0 interface IPv4 address of the router connected to the same local network as the host.
- B. The same default gateway IPv4 address is configured on each host on the local network.
- C. The IPv4 address of the default gateway must be the first host address in the subnet.
- 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.
Answer: B,D
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.
References:
*Cisco Default Gateway Configuration: Cisco Default Gateway
NEW QUESTION # 25
Select the statements that are correct about bandwidth and throughput (Choose 3).
- A. High latency reduces the bandwidth capacity.
- B. Low bandwidth can result in increased latency.
- C. High bandwidth ensures low latency.
- D. Reducing latency generally increases throughput.
Answer: A,B,D
NEW QUESTION # 26
Which wireless security option uses a pre-shared key to authenticate clients?
- A. WPA2-Enterprise
- B. WPA2-Personal
- C. 802.1x
- D. 802.1q
Answer: B
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 connect1.
References :=
*What is a Wi-Fi Protected Access Pre-Shared Key (WPA-PSK)?
*Exploring WPA-PSK and WiFi Security
*WPA2-Personal: This wireless security option uses a pre-shared key (PSK) for authentication. Each client that connects to the network must use this key to gain access. It is designed for home and small office networks where simplicity and ease of use are important.
*WPA2-Enterprise: Unlike WPA2-Personal, WPA2-Enterprise uses 802.1x authentication with an authentication server (such as RADIUS) and does not rely on a pre-shared key.
*802.1x: This is a network access control protocol for LANs, particularly wireless LANs. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN.
*802.1q: This is a networking standard that supports VLAN tagging on Ethernet networks and is not related to wireless security.
References:
*Cisco Documentation on WPA2 Security: Cisco WPA2
*Understanding Wireless Security: Wireless Security Guide
NEW QUESTION # 27
Which command will display the following output?
- A. show cdp neighbor
- B. show mac-address-table
- C. show inventory
- D. show ip interface
Answer: A
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.
References :=
*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.
References :=
*Cisco CDP Neighbor Command
*Understanding CDP
NEW QUESTION # 28
HOTSPOT
You want to list the IPv4 addresses associated with the host name www.companypro.net.
Complete the command by selecting the correct option from each drop-down list.
Answer:
Explanation:
Explanation:
To list the IPv4 addresses associated with the host name www.companypro.net, you should use the following command:
nslookup www.companypro.net
This command will query the DNS servers to find the IP address associated with the hostname provided. If you want to ensure that it returns the IPv4 address, you can specify the -type=A option, which stands for Address records that hold IPv4 addresses1. However, the nslookup command by default should return the IPv4 address if available.
To list the IPv4 addresses associated with the host name www.companypro.net, you should use the nslookup command.
Command: nslookup
Target: www.companypro.net
So, the completed command is:
nslookup www.companypro.net
nslookup: This command is used to query the Domain Name System (DNS) to obtain domain name or IP address mapping or for any other specific DNS record.
www.companypro.net: This is the domain name you want to query to obtain its associated IP addresses.
Reference: Using nslookup: nslookup Command Guide
NEW QUESTION # 29
What is the most compressed valid format of the IPv6 address 2001 :0db8:0000:0016:0000:001b: 2000:0056?
- A. 2001:db8: 0:16: :1b: 2000:56
- B. 2001:db8: 16: :1b:2:56
- C. 2001:db8: : 16: : 1b:2:56
- D. 2001:db8: : 16: : 1b: 2000: 56
Answer: A
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.
References :=
* Cisco Learning Network
* IPv6 Addressing (Cisco)
NEW QUESTION # 30
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.
Answer:
Explanation:
Explanation:
The correct matching of the MFA factors to their examples is as follows:
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).
Reference: Multi-Factor Authentication (MFA) Explained: MFA Guide
Understanding Authentication Factors: Authentication Factors
NEW QUESTION # 31
HOTSPOT
An app on a user's computer is having problems downloading data.
The app uses the following URL to download data: https://www.companypro.net:7100/api
You need to use Wireshark to capture packets sent to and received from that URL.
Which Wireshark filter options would you use to filter the results? Complete the command by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct selection.
Answer:
Explanation:
Explanation:
To capture packets sent to and received from the URL https://www.companypro.net:7100/api using
Wireshark, you would use the following filter options:
Protocol: tcp
Filter Type: port
Port Number: 7100
This filter setup in Wireshark will display all TCP packets that are sent to or received from port 7100, which is the port specified in the URL for the API service. Since HTTPS typically uses TCP as the transport layer protocol, filtering by TCP and the specific port number will help isolate the relevant packets for troubleshooting the app's data download issues.
tcp: The app is using HTTPS, which relies on the TCP protocol for communication.
port: The specific port number used by the application, which in this case is 7100.
7100: This is the port specified in the URL (https://www.companypro.net:7100/api).
This filter will capture all TCP traffic on port 7100, allowing you to analyze the packets related to the application's data download.
Reference: Wireshark Filters: Wireshark Display Filters
NEW QUESTION # 32
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. Default gateway
- B. Default route
- C. Static route
- D. Additional VLAN
Answer: A
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 VLAN2. 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 networks12.
Reference: =
* Understanding and Configuring VLAN Routing and Bridging on a Router Using the IRB Feature
* VLAN 2 not able to ping gateway - Cisco Community
* VLANs: Virtual Local Area Networks (VLANs) logically segment network traffic to improve security and performance. Devices within the same VLAN can communicate directly.
* Default Gateway: For devices in VLAN2 to communicate with devices outside their VLAN, they need a default gateway configured. The default gateway is typically a router or Layer 3 switch that routes traffic between different VLANs and subnets.
* Additional VLAN: Not needed in this scenario as the issue is related to routing traffic outside VLAN2, not creating another VLAN.
* Default Route: While a default route on the router may be necessary, the primary issue for devices within VLAN2 is to have a configured default gateway.
* Static Route: This is used on routers to manually specify routes to specific networks but does not address the need for a default gateway on the client devices.
Reference:
* Cisco VLAN Configuration Guide: Cisco VLAN Configuration
* Understanding and Configuring VLANs: VLANs Guide
NEW QUESTION # 33
You want to store files that will be accessible by every user on your network.
Which endpoint device do you need?
- A. Switch
- B. Access point
- C. Hub
- D. Server
Answer: D
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 devices1.
References :=
* What is a Server?
* Understanding Servers and Their Functions
A server is a computer designed to process requests and deliver data to other computers over a local network or the internet. In this case, to store files that will be accessible by every user on the network, a file server is the appropriate endpoint device. It provides a centralized location for storing and managing files, allowing users to access and share files easily.
* A. Access point: Provides wireless connectivity to a network.
* C. Hub: A basic networking device that connects multiple Ethernet devices together, making them act as a single network segment.
* D. Switch: A networking device that connects devices on a computer network by using packet switching to forward data to the destination device.
Thus, the correct answer is B. Server.
References :=
* File Server Overview (Cisco)
* Server Roles in Networking (Cisco)
NEW QUESTION # 34
Examine the following output:
Which two conclusions can you make from the output of the tracert command? (Choose 2.) Note: You will receive partial credit for each correct answer.
- A. The IPv6 address associated with the www.cisco.com server is 2600:1408: c400: 38d: : b33.
- B. The trace successfully reached the www.cisco.com server.
- C. The trace failed after the fourth hop.
- D. The routers at hops 5 and 6 are offline.
- E. The device sending the trace has IPv6 address 2600:1408:c400:38d :: b33.
Answer: A,B
Explanation:
*Statement A: "The trace successfully reached the www.cisco.com server." This is true as indicated by the
"Trace complete" message at the end, showing that the trace has reached its destination.
*Statement C: "The IPv6 address associated with the www.cisco.com server is 2600:1408:c400:38d::b33." This is true because the final hop in the trace, which is the destination, has this IPv6 address.
*Statement B: "The trace failed after the fourth hop." This is incorrect as the trace continues beyond the fourth hop, despite some intermediate timeouts.
*Statement D: "The routers at hops 5 and 6 are offline." This is not necessarily true. The routers might be configured to not respond to traceroute requests.
*Statement E: "The device sending the trace has IPv6 address 2600:1408:c400:38d::b33." This is incorrect; this address belongs to the destination server, not the sender.
References:
*Understanding Traceroute: Traceroute Guide
NEW QUESTION # 35
Move each protocol from the list on the left to its correct example on the right.
Answer:
Explanation:
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.
References:
* DNS Basics: What is DNS?
* DHCP Overview: What is DHCP?
* ICMP and Ping: Understanding ICMP
NEW QUESTION # 36
What is the primary use of ICMP in network management?
- A. Error reporting and diagnostics
- B. Translating domain names to IP addresses
- C. Secure file transfer
- D. Assigning IP addresses
Answer: A
NEW QUESTION # 37
You need to connect a computer's network adapter to a switch using a 1000BASE-T cable.
Which connector should you use?
- A. RJ-11
- B. RJ-45
- C. OS2 LC
- D. Coax
Answer: B
Explanation:
*1000BASE-T Cable: This refers to Gigabit Ethernet over twisted-pair cables (Cat 5e or higher).
*Connector: RJ-45 connectors are used for Ethernet cables, including those used for 1000BASE-T.
*Coax: Used for cable TV and older Ethernet standards like 10BASE2.
*RJ-11: Used for telephone connections.
*OS2 LC: Used for fiber optic connections.
References:
*Ethernet Standards and Cables: Ethernet Cable Guide
NEW QUESTION # 38
Which device protects the network by permitting or denying traffic based on IP address, port number, or application?
- A. Firewall
- B. Access point
- C. VPN gateway
- D. Intrusion detection system
Answer: A
Explanation:
* Firewall: A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It permits or denies traffic based on IP addresses, port numbers, or applications.
* Access Point: This is a device that allows wireless devices to connect to a wired network using Wi-Fi.
It does not perform traffic filtering based on IP, port, or application.
* VPN Gateway: This device allows for secure connections between networks over the internet, but it is not primarily used for traffic filtering based on IP, port, or application.
* Intrusion Detection System (IDS): This device monitors network traffic for suspicious activity and policy violations, but it does not actively permit or deny traffic.
References:
* Understanding Firewalls: Firewall Basics
NEW QUESTION # 39
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.
Answer:
Explanation:
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.
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.
References :=
* 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
NEW QUESTION # 40
Which component of the AAA service security model provides identity verification?
- A. Accounting
- B. Auditing
- C. Authentication
- D. Authorization
Answer: C
Explanation:
The AAA service security model consists of three components:
Authentication, Authorization, and Accounting.
* Authentication: This is the process of verifying the identity of a user or device. It ensures that only legitimate users can access the network or service.
* Authorization: This determines what an authenticated user is allowed to do or access within the network.
* Auditing/Accounting: This component tracks the actions of the user, including what resources they access and what changes they make.
Thus, the correct answer is C. Authentication.
Reference: =
* Cisco AAA Overview
* Understanding AAA (Authentication, Authorization, and Accounting)
NEW QUESTION # 41
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.
Answer:
Explanation:
Explanation:
Here's how each protocol aligns with the correct TCP/IP model layer:
TCP (Transmission Control Protocol): This protocol belongs to the Transport layer, which is responsible for providing communication between applications on different hosts1.
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 network1.
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 data1.
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 process1.
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.
Reference: TCP/IP Model Overview: Cisco TCP/IP Model
Understanding the TCP/IP Model: TCP/IP Layers
NEW QUESTION # 42
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.
Answer:
Explanation:
Explanation:
Here's how each protocol aligns with the correct TCP/IP model layer:
* TCP (Transmission Control Protocol): This protocol belongs to the Transport layer, which is responsible for providing communication between applications on different hosts1.
* 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 network1.
* 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 data1.
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 process1.
* TCP:
* TCP Model Layer: Transport
* Explanation: 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
* Explanation: 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
* Explanation: 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
* Explanation: 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
NEW QUESTION # 43
A local company requires two networks in two new buildings. The addresses used in these networks must be in the private network range.
Which two address ranges should the company use? Note: You will receive partial credit for each correct selection. (Choose 2.)
- A. 172.16.0.0 to 172.31.255.255
- B. 192.168.0.0 to 192.168.255.255
- C. 192.16.0.0 to 192.16.255.255
- D. 11.0.0.0 to 11.255.255.255
Answer: A,B
Explanation:
The private IP address ranges that are set aside specifically for use within private networks and not routable on the internet are as follows:
Class A: 10.0.0.0 to 10.255.255.255
Class B: 172.16.0.0 to 172.31.255.255
Class C: 192.168.0.0 to 192.168.255.255
These ranges are defined by the Internet Assigned Numbers Authority (IANA) and are used for local communications within a private network123.
Given the options:
A). 172.16.0.0 to 172.31.255.255 falls within the Class B private range.
B). 192.16.0.0 to 192.16.255.255 is not a recognized private IP range.
C). 11.0.0.0 to 11.255.255.255 is not a recognized private IP range.
D). 192.168.0.0 to 192.168.255.255 falls within the Class C private range.
Therefore, the correct selections that the company should use for their private networks are A and D.
Reference: =
Reserved IP addresses on Wikipedia
Private IP Addresses in Networking - GeeksforGeeks
Understanding Private IP Ranges, Uses, Benefits, and Warnings
NEW QUESTION # 44
A user initiates a trouble ticket stating that an external web page is not loading. You determine that other resources both internal and external are still reachable.
Which command can you use to help locate where the issue is in the network path to the external web page?
- A. ipconfig/all
- B. ping -t
- C. tracert
- D. nslookup
Answer: C
Explanation:
The tracert command is used to determine the route taken by packets across an IP network. When a user reports that an external web page is not loading, while other resources are accessible, it suggests there might be an issue at a certain point in the network path to the specific web page. The tracert command helps to diagnose where the breakdown occurs by displaying a list of routers that the packets pass through on their way to the destination. It can identify the network segment where the packets stop progressing, which is valuable for pinpointing where the connectivity issue lies. References := Cisco CCST Networking Certification FAQs - CISCONET Training Solutions, Command Prompt (CMD): 10 network-related commands you should know, Network Troubleshooting Commands Guide: Windows, Mac & Linux - Comparitech, How to Use the Traceroute and Ping Commands to Troubleshoot Network, Network Troubleshooting Techniques: Ping, Traceroute, PathPing.
*tracert Command: This command is used to determine the path packets take to reach a destination. It lists all the hops (routers) along the way and can help identify where the delay or failure occurs.
*ping -t: This command sends continuous ping requests and is useful for determining if a host is reachable but does not provide path information.
*ipconfig /all: This command displays all current TCP/IP network configuration values and can be used to verify network settings but not to trace a network path.
*nslookup: This command queries the DNS to obtain domain name or IP address mapping, useful for DNS issues but not for tracing network paths.
References:
*Microsoft tracert Command: tracert Command Guide
*Troubleshooting Network Issues with tracert: Network Troubleshooting Guide
NEW QUESTION # 45
Which two pieces of information should you include when you initially create a support ticket? (Choose 2.)
- A. The description of the top-down fault-finding procedure
- B. A description of the conditions when the fault occurs
- C. A detailed description of the fault
- D. The actions taken to resolve the fault
- E. Details about the computers connected to the network
Answer: B,C
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
NEW QUESTION # 46
What is the purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch?
- A. To enable access to the CLI on the switch through Telnet or SSH
- B. To enable the switch to provide DHCP services to other switches in the network
- C. To enable the switch to resolve URLs for the attached the devices
- D. To enable the switch to act as a default gateway for the attached devices
Answer: A
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 switch1.
References :=
*Understanding the Management VLAN
*Cisco - VLAN Configuration Guide
*Remote Management of Switches
Assigning an IP address to the management VLAN interface (often the VLAN 1 interface by default) on a Layer 2 switch allows network administrators to remotely manage the switch using protocols such as Telnet or SSH. This IP address does not affect the switch's ability to route traffic between VLANs but provides a means to access and configure the switch through its Command Line Interface (CLI).
*A: The switch does not act as a default gateway; this is typically a function of a Layer 3 device like a router.
*B: The switch does not resolve URLs; this is typically a function of DNS servers.
*C: The switch can relay DHCP requests but does not typically provide DHCP services itself; this is usually done by a dedicated DHCP server or router.
Thus, the correct answer is D. To enable access to the CLI on the switch through Telnet or SSH.
References :=
*Cisco VLAN Management Overview
*Cisco Catalyst Switch Management
NEW QUESTION # 47
A support technician examines the front panel of a Cisco switch and sees 4 Ethernet cables connected in the first four ports. Ports 1, 2, and 3 have a green LED. Port 4 has a blinking green light.
What is the state of the Port 4?
- A. Link is up and there is no activity.
- B. Link is up with cable malfunctions.
- C. Link is up and active.
- D. Link is up and not stable.
Answer: C
Explanation:
On a Cisco switch, a port with a blinking green LED typically indicates that the port is up (active) and is currently transmitting or receiving data. This is a normal state indicating active traffic on the port.
*A. Link is up with cable malfunctions: Usually indicated by an amber or blinking amber light.
*B. Link is up and not stable: Not typically indicated by a green blinking light.
*D. Link is up and there is no activity: Would be indicated by a solid green light without blinking.
Thus, the correct answer is C. Link is up and active.
References :=
*Cisco Switch LED Indicators
*Cisco Ethernet Switch LED Patterns
NEW QUESTION # 48
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