2026 ITDumpsKR 최신 100-150 PDF 버전 시험 문제집과 100-150 시험 문제 및 답변 무료 공유: https://drive.google.com/open?id=1bDGsvCApj_vJne5wO2QVRwA11kvqdwxW
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| Section | Weight | Objectives |
|---|---|---|
| Endpoints and Media Types | 15% | - Network cables and connectors - Wired, wireless, and cellular technologies - Endpoint devices and operating systems - Connectivity verification tools |
| Standards and Concepts | 20% | - Common network protocols - OSI and TCP/IP models - Network topologies and types - Bandwidth, throughput, and latency |
| Addressing and Subnet Formats | 20% | - Public vs private IP and NAT - Subnet mask and CIDR notation - IPv6 addressing and prefixes - IPv4 addressing and subnetting |
| Infrastructure | 20% | - Network device ports and status indicators - Routing concepts and default gateway - Wireless access points and SSIDs - Switching concepts and VLANs |
| Security | 10% | - Common threats and vulnerabilities - Firewall and access control principles - CIA triad and AAA model - Wireless security standards (WPA2/WPA3) |
| Diagnosing Problems | 15% | - Packet capture and analysis basics - Troubleshooting methodology - Remote access methods (SSH, RDP, console) - Command-line utilities (ping, traceroute, nslookup) |
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질문 # 83
Evaluate the graphic.
Exhibit: Installation of a removable network transceiver module into a router interface.
What type of interface is the administrator installing in the router?
정답：C
설명：
The image illustrates the installation of a Small Form-Factor Pluggable (SFP) transceiver module into a compatible network interface.
SFP technology provides modular network connectivity, enabling administrators to select appropriate transceiver types based on transmission media, supported data rates, and communication distance.
An SFP transceiver is a compact, hot-swappable interface module that connects networking equipment to optical-fiber or copper Ethernet infrastructure.
The photograph shows a removable metallic transceiver being inserted into an SFP-compatible port. The surrounding connections also illustrate fiber-optic network cabling.
SFP modules commonly support Gigabit Ethernet, while enhanced SFP+ modules typically support 10- Gigabit Ethernet connectivity.
Why the other options are incorrect:
A). PoE: Power over Ethernet provides electrical power and data over supported Ethernet cabling. It is not the removable transceiver interface shown.
B). USB: Universal Serial Bus provides peripheral connectivity and uses different connector designs.
C). Serial: Serial interfaces support sequential data transmission and are commonly associated with console management or legacy WAN connections.
D). SFP: Provides modular, replaceable network interfaces for supported fiber-optic and copper connections.
Therefore, Option D correctly identifies the interface technology shown in the exhibit. Cisco ' s SFP installation documentation confirms the modular and hot-swappable characteristics of these transceivers.
References:
Cisco Certified Support Technician Networking (100-150) - Network Infrastructure, Network Connections and Interface Types.
Cisco, SFP and SFP+ Transceiver Module Installation Notes.
Cisco, 4000 Series Integrated Services Routers - Interfaces and Modules.
질문 # 84
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.
정답：
설명：
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
질문 # 85
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.
정답：
설명：
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
질문 # 86
Which device is an Internet of Things (IoT) device?
정답：B
설명：
The Internet of Things (IoT) refers to a network of physical objects equipped with sensors, embedded processors, software, and network connectivity that enable them to collect, exchange, and act on information.
An internet-accessible thermostat is an example of an IoT device because it combines environmental sensing, automated control, and network communication.
A smart thermostat typically includes temperature sensors, a microcontroller, and Wi-Fi or another network interface. It can communicate with cloud-based management platforms, allowing users to monitor indoor temperatures, adjust heating and cooling settings remotely, and configure automated schedules.
IoT technology extends beyond thermostats to include smart lighting, connected security cameras, industrial sensors, wearable devices, and intelligent appliances.
Why the other options are incorrect:
B). Cloud-based file storage array: Primarily provides data storage infrastructure rather than functioning as an IoT endpoint.
C). Virtual private network concentrator: Establishes and manages secure VPN connections between remote clients or networks.
D). Video streaming server: Delivers multimedia content to clients across a network.
Although these systems may be internet-connected, internet connectivity alone does not make them IoT devices.
Therefore, Option A is correct because a connected thermostat is a physical device that senses environmental conditions and supports network-based monitoring and control.
References:
Cisco Certified Support Technician Networking (100-150) - Domain 1.0: Standards and Concepts, Objective
1.5: Describe Common Network Applications and Protocols.
Cisco - What Is the Internet of Things (IoT)?
Cisco Networking Academy - Introduction to IoT, Smart Devices, Sensors, and Connectivity.
질문 # 87
A help desk technician receives a report that a user is experiencing network connectivity issues. The help desk supervisor advises the technician to use a bottom-up troubleshooting method to determine the cause of the problem.
Which two potential issues would the technician check first using the bottom-up method? (Choose two.)
정답：A,E
설명：
Correct Answers: C. Network interface card failure and D. Incorrect or damaged cables.
The bottom-up troubleshooting methodology follows the Open Systems Interconnection (OSI) reference model, beginning at Layer 1 (Physical Layer) and progressively moving toward higher layers.
The primary objective is to identify physical connectivity problems before investigating network configuration, transport protocols, or application services.
C). Network interface card failure - Correct
A faulty Network Interface Card (NIC) can prevent a computer from establishing a physical network connection. Technicians should examine NIC status indicators, verify link detection, inspect physical connections, and test the adapter using appropriate diagnostic tools.
D). Incorrect or damaged cables - Correct
Damaged Ethernet cables, defective connectors, improper cable termination, or disconnected cables can prevent reliable signal transmission. Technicians should inspect cable connections, examine link indicators, and replace questionable cables with known-good alternatives.
Why the other options are incorrect:
A). An incorrect network password involves authentication, which is investigated after physical connectivity.
B). An incorrect IP address configuration relates to Layer 3 networking.
E). An incorrect DNS server address affects name resolution, which is investigated at higher layers.
Therefore, C and D are the correct answers because both concern fundamental physical-layer connectivity.
Cisco Press explicitly identifies the Physical layer as the starting point for bottom-up troubleshooting.
Cisco Press+1
References:
Cisco Certified Support Technician Networking (100-150) - Network Troubleshooting, Physical Connectivity and Troubleshooting Methodologies.
Cisco Press, Troubleshooting Methods for Cisco IP Networks - Structured Troubleshooting Approaches:
The Bottom-Up Troubleshooting Approach.
Cisco Networking Academy, IT Essentials - Common Problems and Solutions for Networking.
질문 # 88
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