100-150 Endpoints and Media Types Practice Test 2 — 15 Questions

Question 1

A network technician is tasked with connecting two distribution switches located in separate buildings 500 meters apart. Which media type should be selected to ensure reliable connectivity and high bandwidth without the need for repeaters?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Single-mode fiber optic cabling. Optical fiber provides the necessary distance capabilities for a 500-meter run, which significantly exceeds the 100-meter limit of standard copper UTP cabling. In an industrial or outdoor environment, fiber is also immune to electromagnetic interference from heavy machinery or power lines. Understanding media limitations ensures that network technicians select the appropriate physical layer components to maintain signal integrity.

Answer

Category 6 UTP cabling

Answer

Shielded Twisted Pair (STP) cabling

Answer

Category 5e crossover cabling

Question 2

A junior technician is organizing a box of fiber optic patch cords. Which TWO connector types are commonly used to terminate modern fiber optic media? (Choose TWO.)

Accepted Answer

LC (Lucent Connector). Identifying physical connectors is a fundamental skill for network support technicians working with fiber infrastructure. LC and SC connectors are the industry standards for most enterprise networking equipment. Knowledge of these connectors prevents damage to SFP modules and patch panels that may occur if a technician attempts to force an incompatible physical connection.

Answer

RJ-45

Answer

BNC

Answer

F-type

Question 3

Refer to the exhibit. A technician is troubleshooting a connection between a Cisco switch and a server. Based on the output, what is the most likely cause of the 'line protocol is down' status?

Accepted Answer

A duplex or speed mismatch exists.. In Cisco IOS, the status 'up/down' typically indicates a Layer 2 framing or configuration mismatch rather than a physical break. While the physical layer is active, the line protocol fails due to issues like duplex mismatches, encapsulation errors, or keepalive failures. Identifying this distinction allows technicians to focus on software configuration rather than replacing hardware.

Answer

The physical cable is disconnected.

Answer

The switch port has been administratively disabled.

Answer

The MAC address on the server is incorrect.

Question 4

A company is experiencing intermittent network drops in a manufacturing area where unshielded twisted-pair (UTP) cables are run parallel to high-voltage power lines. What is the most effective solution to resolve this issue?

Accepted Answer

Replace UTP with Shielded Twisted Pair (STP).. Electromagnetic Interference (EMI) occurs when electrical signals from power lines disrupt the data signals in copper cables. Replacing UTP with Shielded Twisted Pair (STP) or fiber optic cabling provides the necessary protection to maintain data integrity. Technicians must recognize environmental factors that degrade signal quality to ensure stable endpoint connectivity in industrial settings.

Answer

Upgrade the cabling to Category 6a UTP.

Answer

Install a wireless bridge between endpoints.

Answer

Configure the switch ports for half-duplex.

Question 5

A network administrator is designing a wireless deployment for an office. Which TWO frequency bands are most commonly used by standard Wi-Fi endpoints to transmit data? (Choose TWO.)

Accepted Answer

2.4 GHz. Wi-Fi standards primarily utilize the 2.4 GHz and 5 GHz bands to provide a balance of range and speed. The 2.4 GHz band offers better penetration through walls, while the 5 GHz band provides higher data rates and less congestion. Understanding these bands helps technicians troubleshoot interference and coverage issues for mobile endpoints.

Answer

900 MHz

Answer

60 GHz

Answer

10 GHz

Question 6

An office uses Power over Ethernet (PoE) to provide power to IP phones. Which device is responsible for acting as the Power Sourcing Equipment (PSE) in this scenario?

Accepted Answer

The PoE-capable Switch. In a PoE environment, the Power Sourcing Equipment (PSE) is the device that injects power into the Ethernet cable. Usually, this is a PoE-capable switch. Understanding the roles of PSE and Powered Devices (PD) is vital for troubleshooting power-related issues at the network edge where endpoints are connected.

Answer

The IP Phone

Answer

The DHCP Server

Answer

The Patch Panel

Question 7

A technician is installing a new 10GBASE-T network card in a server and needs to select the appropriate copper cabling. Which cable category is the minimum requirement to support 10 Gbps speeds at a distance of 100 meters?

Accepted Answer

Category 6a. 10GBASE-T over copper requires Category 6a (augmented Cat 6) to reliably achieve 10 Gbps at the full 100-meter channel length. Cat 6a is specified to 500 MHz and is designed to handle the higher alien crosstalk and signal-to-noise requirements of 10GBASE-T. Cat 6 can only support 10GBASE-T up to about 55 meters, not 100 meters.

Answer

Category 5e

Answer

Category 6

Answer

Category 3

Question 8

Refer to the exhibit. A technician is verifying the hardware installed in a switch. What type of media is required to connect to the 'Te1/1/1' interface based on the SFP type shown?

Accepted Answer

Multi-mode fiber optic cable. The 'Te1/1/1' interface naming indicates a 10 Gigabit Ethernet port, and the SFP type shown in the exhibit is a multi-mode fiber SFP (typically with an OM3/OM4 LC connector and a wavelength like 850 nm). Multi-mode fiber is used for short-reach 10G connections up to ~300–400 m, which matches the SFP's design. Therefore, a multi-mode fiber optic cable is required.

Answer

Single-mode fiber optic cable

Answer

Category 6a copper cable

Answer

Twinaxial (DAC) copper cable

Question 9

A company is deploying IoT (Internet of Things) smart sensors throughout a large agriculture field to monitor soil moisture. Which wireless technology is most appropriate for these endpoints if they must operate on battery power for several years while transmitting data over several kilometers?

Accepted Answer

LoRaWAN. LoRaWAN is a Low-Power Wide-Area Network (LPWAN) protocol built specifically for battery-operated IoT endpoints that need multi-year lifespans and multi-kilometer range. It uses chirp spread spectrum modulation in sub-GHz ISM bands (e.g., 868 MHz in EU, 915 MHz in US), achieving 2–15 km range at very low data rates (0.3–50 kbps) with a single coin-cell battery lasting 5–10 years. This combination of long range and ultra-low power is exactly what soil-moisture sensors in a large field require.

Answer

Wi-Fi (802.11ax)

Answer

Bluetooth Low Energy (BLE)

Answer

Gigabit Ethernet

Question 10

A network designer needs to select media for a high-performance backbone that supports at least 10 Gbps. Which THREE media types are capable of supporting this speed? (Choose THREE.)

Accepted Answer

Single-mode fiber. Single-mode fiber (A) is correct because it carries laser-based signals over long distances and easily supports 10 Gbps and far higher rates (10G/40G/100G Ethernet). Multi-mode fiber (C) is correct because OM3/OM4/OM5 multimode supports 10 Gbps Ethernet (e.g., 10GBASE-SR) over typical backbone distances. Category 6a copper (D) is correct because it is specified to support 10GBASE-T at 10 Gbps up to 100 meters. Category 5e (B) is limited to 1 Gbps (1000BASE-T) and does not meet the 10 Gbps requirement, and Category 3 (E) only supports up to 10 Mbps and is unsuitable for a high-performance backbone.

Answer

Category 5e copper

Answer

Category 3 copper

Question 11

A technician is terminating a UTP cable and notices that the plastic clip on the RJ-45 connector is broken. What is the most likely consequence of using this connector for a network endpoint?

Accepted Answer

The connection will experience intermittent link drops.. The RJ-45 retention clip locks the connector into the port and maintains consistent contact pressure between the eight gold pins and the port's contacts. A broken clip allows the plug to slide slightly, breaking or degrading individual pin contacts, which produces intermittent link drops and CRC errors. The link may come up and then drop repeatedly as the cable shifts.

Answer

The cable will only support half-duplex speeds.

Answer

The cable will cause a short circuit in the switch.

Answer

Data will be transmitted without encryption.

Question 12

Which type of fiber optic cabling is characterized by a core diameter of approximately 9 microns and is optimized for long-distance transmissions using a single path of light?

Accepted Answer

Single-mode fiber. Single-mode fiber (SMF) has a very small core, typically 9 microns, which forces light into a single path. This eliminates modal dispersion, allowing signals to travel much further than multi-mode fiber. Understanding these core differences helps technicians differentiate between the two main types of fiber used in modern network infrastructures.

Answer

OM3 Multi-mode fiber

Answer

OM1 Multi-mode fiber

Answer

Shielded Twisted Pair

Question 13

A technician needs to identify which endpoint is connected to a specific switch port. Which command should be used to see the Layer 2 address of the connected device and the port it is associated with?

Accepted Answer

show mac address-table. The show mac address-table command displays the switch's MAC address table, which maps MAC addresses to switch ports and VLANs. This allows a technician to identify which endpoint (by its Layer 2 MAC address) is connected to a specific port. It is the standard Cisco IOS command for Layer 2 endpoint-to-port mapping.

Answer

show ip route

Answer

show interfaces status

Answer

show running-config

Question 14

A technician connects a laptop directly to a switch using a straight-through cable, and the link light immediately turns green. Which feature allowed this connection to work even if the port traditionally required a crossover cable?

Accepted Answer

Auto-MDIX. Auto-MDIX (Automatic Medium-Dependent Interface Crossover) is a feature that allows a switch port to automatically detect the required cable type (straight-through or crossover) and configure the internal transmit and receive pairs accordingly. This simplifies deployment by allowing technicians to use any standard Ethernet cable for most connections.

Answer

Auto-Negotiation

Answer

Power over Ethernet (PoE)

Answer

VLAN Trunking

Question 15

A network technician is tasked with connecting two distribution switches located in separate buildings 500 meters apart. Which media type should be selected to ensure reliable connectivity and high bandwidth without the need for repeaters?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Single-mode Fiber (OS2). Single-mode fiber is the only standard media type capable of transmitting data over distances exceeding several kilometers without significant signal degradation. Unlike multi-mode fiber, which is limited by modal dispersion over long runs, single-mode fiber uses a narrow glass core and laser light to maintain signal integrity over many miles, making it the primary choice for campus backbones.

Answer

Multi-mode Fiber (OM4)

Answer

Category 6a UTP

Answer

Shielded Twisted Pair (STP)