Updated 100-150 Dumps Questions Are Available [2026] For Passing Cisco Exam
Free UPDATED Cisco 100-150 Certification Exam Dumps is Online
Cisco 100-150 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
NEW QUESTION # 43
Which command will display the following output?
- A. show ip interface
- B. show cdp neighbor
- C. show inventory
- D. show mac-address-table
Answer: B
Explanation:
The output columns (Device ID, Local Intrfce, Holdtime, Capability, Platform, Port ID) match the information provided by the show cdp neighbor command.
NEW QUESTION # 44
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. Reducing latency generally increases throughput.
- D. High bandwidth ensures low latency.
Answer: A,B,C
NEW QUESTION # 45
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. nslookup
- B. ipconfig/all
- C. tracert
- D. ping -t
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.
Reference: =
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.
Reference:
* Microsoft tracert Command: tracert Command Guide
* Troubleshooting Network Issues with tracert: Network Troubleshooting Guide
NEW QUESTION # 46
You want to store files that will be accessible by every user on your network.
Which endpoint device do you need?
- A. Hub
- B. Switch
- C. Access point
- 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.
Reference:
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.
Reference: =
File Server Overview (Cisco)
Server Roles in Networking (Cisco)
NEW QUESTION # 47
A host is given the IP address 172.16.100.25 and the subnet mask 255.255.252.0.
What is the CIDR notation for this address?
- A. 172.16.100.25 /21
- B. 172.16.100.25 /23
- C. 172.16.100.25 /20
- D. 172.16.100.25 /22
Answer: D
Explanation:
The mask 255.255.252.0 has 22 contiguous one bits (16 from the first two octets plus 6 from the third), which corresponds to a /22 prefix.
NEW QUESTION # 48
Which wireless security option uses a pre-shared key to authenticate clients?
- A. WPA2-Personal
- B. 802.1x
- C. WPA2-Enterprise
- D. 802.1q
Answer: A
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 # 49
What is the main function of ARP in a local network when a device needs to communicate with another device?
- A. Assign IP address
- B. Resolve MAC to IP
- C. Route packets
- D. Resolve IP to MAC
Answer: D
Explanation:
ARP maps IP addresses to MAC addresses, enabling devices to locate each other within the same network and properly deliver Ethernet frames to the correct hardware destination.
NEW QUESTION # 50
What is the primary use of ICMP in network management?
- A. Secure file transfer
- B. Error reporting and diagnostics
- C. Translating domain names to IP addresses
- D. Assigning IP addresses
Answer: B
NEW QUESTION # 51
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.
Answer:
Explanation:
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.
Reference: Understanding Firewalls: Firewall Capabilities
Network Security Best Practices: Network Security Guide
NEW QUESTION # 52
During the data encapsulation process, which OSI layer adds a header that contains MAC addressing information and a trailer used for error checking?
- A. Transport
- B. Data Link
- C. Session
- D. Network
Answer: B
Explanation:
The Data Link layer adds the MAC address header and a trailer containing the frame check sequence for error detection.
NEW QUESTION # 53
Which type of cable is commonly used for Ethernet connections and contains twisted pairs to reduce electromagnetic interference?
- A. Coaxial
- B. Twisted pair
- C. Serial
- D. Fiber optic
Answer: B
Explanation:
Twisted pair cables reduce interference by twisting wires together, improving signal integrity and making them the most widely used medium for Ethernet LAN connections.
NEW QUESTION # 54
During the data encapsulation process, which OSI layer adds a header that contains MAC addressing information and a trailer used for error checking?
- A. Transport
- B. Data Link
- C. Session
- D. Network
Answer: B
Explanation:
OSI model
During the data encapsulation process, the Data Link layer of the OSI model is responsible for adding a header that contains MAC addressing information and a trailer used for error checking. The header typically includes the source and destination MAC addresses, while the trailer contains a Frame Check Sequence (FCS) which is used for error detection1.
The Data Link layer ensures that messages are delivered to the proper device on a LAN using hardware addresses and translates messages from the Network layer into bits for the Physical layer to transmit. It also controls how data is placed onto the medium and is received from the medium through the physical hardware.
References :=
* The OSI Model - The 7 Layers of Networking Explained in Plain English
* OSI Model - Network Direction
* Which layer adds both header and trailer to the data?
* What is OSI Model | 7 Layers Explained - GeeksforGeeks
NEW QUESTION # 55
Drag and Drop Question
Move each network category on the left to its correct definition on the right.
Answer:
Explanation:
Explanation:
A LAN covers a limited local area such as a home, office, or small group of buildings. A WAN connects networks across large geographic distances using provider links or tunnels. A PAN connects personal devices within a short range, typically around 10 meters.
NEW QUESTION # 56
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? (Choose two.)
Note: You will receive partial credit for each correct selection.
- A. 192.168.0.0 to 192.168.255.255
- B. 11.0.0.0 to 11.255.255.255
- C. 172.16.0.0 to 172.31.255.255
- D. 192.16.0.0 to 192.16.255.255
Answer: A,C
Explanation:
192.168.0.0-192.168.255.255 is the 192.168.0.0/16 private address block.
172.16.0.0-172.31.255.255 is the 172.16.0.0/12 private address block.
NEW QUESTION # 57
Which protocol is used to automatically assign IP addresses and other network configuration parameters to devices on a network?
- A. SNMP
- B. FTP
- C. DHCP
- D. DNS
Answer: C
Explanation:
DHCP dynamically assigns IP addresses, subnet masks, gateways, and DNS servers, simplifying network management and reducing configuration errors compared to manual IP assignment.
NEW QUESTION # 58
Hotspot Question
You connect to a Cisco switch and run the following command:
show ip interface brief
The command displays the following partial output:
For each statement about the output, select True or False.
Note: You will receive partial credit for each correct selection.
Answer:
Explanation:
Explanation:
The method shown as manual indicates the IP address on GigabitEthernet0/0 was configured manually through the CLI. GigabitEthernet0/1 shows down/down, so a connected device cannot successfully send broadcast traffic through that interface. GigabitEthernet0/2 shows administratively down, which indicates the interface was disabled with the shutdown command.
NEW QUESTION # 59
A user reports a problem connecting to network resources. Other users connected to the same switch are not experiencing the same problem. The user's computer is patched to switch port Gi0/15. The status indicator for his port is blinking alternately green then amber.
What does this light pattern indicate about the status of port Gi0/15?
- A. The port is blocked by a firewall rule.
- B. The port is administratively shutdown.
- C. The port is experiencing a high rate of errors.
- D. The port is not connected to a powered-on device.
Answer: C
Explanation:
On Cisco switches, a port LED that alternates green and amber indicates the port is forwarding traffic but is encountering a high number of errors. This points to a problem such as cabling issues, duplex mismatches, or interface faults affecting communication on that port.
NEW QUESTION # 60
What is the correct IPv6 address format after compressing "2001:0db8:0000:0016:0000:001b:2000:0056"?
- A. 2001:db8::16::1b:2000:56
- B. 2001:db8:0:16:0:1b:2000:0056
- C. 2001:0db8::16:0:1b:2000:56
- D. 2001:db8:0:16::1b:2000:56
Answer: D
NEW QUESTION # 61
Which command is commonly used to test connectivity between two network devices by sending ICMP echo requests?
- A. netstat
- B. ping
- C. traceroute
- D. ipconfig
Answer: B
Explanation:
The ping command sends ICMP echo requests to verify connectivity and measure response time, making it a fundamental troubleshooting tool in networking environments.
NEW QUESTION # 62
Which component of the AAA service security model provides identity verification?
- A. Auditing
- B. Accounting
- C. Authorization
- D. Authentication
Answer: D
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 # 63
Which information is included in the header of a UDP segment?
- A. IP addresses
- B. Port numbers
- C. MAC addresses
- D. Sequence numbers
Answer: B
Explanation:
The header of a UDP (User Datagram Protocol) segment includes port numbers. Specifically, it contains the source port number and the destination port number, which are used to identify the sending and receiving applications. UDP headers do not include IP addresses or MAC addresses, as those are part of the IP and Ethernet frame headers, respectively. Additionally, UDP does not use sequence numbers, which are a feature of TCP (Transmission Control Protocol) for ensuring reliable delivery of data segments1.
References :=
* Segmentation Explained with TCP and UDP Header
* User Datagram Protocol (UDP) - GeeksforGeeks
* Which three fields are used in a UDP segment header
* UDP Header: The header of a UDP segment includes the following key fields:
* Source Port: The port number of the sending application.
* Destination Port: The port number of the receiving application.
* Length: The length of the UDP header and data.
* Checksum: Used for error-checking the header and data.
* IP Addresses: These are included in the IP header, not the UDP header.
* Sequence Numbers: These are part of the TCP header, not UDP.
* MAC Addresses: These are part of the Ethernet frame header and are not included in the UDP header.
References:
* RFC 768 - User Datagram Protocol: RFC 768
* Cisco Guide on UDP: Cisco UDP Guide
NEW QUESTION # 64
How does a firewall determine which traffic to block?
- A. The firewall matches traffic based on source and destination IP address.
- B. The firewall matches traffic based on the IP address in the ARP table.
- C. The firewall performs a one-to-many network address translation.
- D. The firewall performs a one-to-one network address translation.
Answer: A
Explanation:
A firewall applies rules to traffic by examining packet details such as source and destination IP addresses. It uses those matching criteria to decide whether the traffic should be permitted or blocked.
NEW QUESTION # 65
......
Cisco Exam 2026 100-150 Dumps Updated Questions: https://www.guidetorrent.com/100-150-pdf-free-download.html
Get The Most Updated 100-150 Dumps To CCST Certification: https://drive.google.com/open?id=1nbG1KD6k9EIKs_WtStzZRFcSlWTs3hnp