220-1201 Practice Test 4 — 25 Questions

Question 1

A company is setting up a new branch office with 30 employees. They need to connect all workstations to the network and provide internet access. The internet connection is a fiber optic line terminating in an ONT. Which device should be placed between the ONT and the switch to route traffic and provide NAT?

Accepted Answer

Router. The ONT converts fiber to Ethernet, but it does not route or perform NAT. A router is required to connect the local network to the internet, provide NAT, and handle IP addressing. A switch alone cannot route, and a firewall is often combined with a router but is not the primary device for routing. The correct answer is a router.

Answer

Patch panel

Answer

Layer 2 switch

Answer

Firewall appliance

Question 2

A technician is troubleshooting a network where users on one floor cannot communicate with users on another floor. Both floors are connected to the same switch via separate VLANs configured for security. What additional device is needed to allow communication between the VLANs?

Accepted Answer

A router or Layer 3 switch. VLANs segment a network into separate broadcast domains, and by default, they cannot communicate with each other. A Layer 3 device, such as a router or a Layer 3 switch, is required to route traffic between VLANs. A Layer 2 switch cannot perform routing. The correct answer is a router or a Layer 3 switch.

Answer

A hub

Answer

A Layer 2 switch

Answer

A bridge

Question 3

A technician is deploying a wireless network in a large warehouse. The warehouse has metal shelving and concrete walls. The technician needs to ensure coverage throughout the area. Which antenna type should be used for the access points to maximize coverage in this environment?

Accepted Answer

Directional antenna. In an environment with obstacles like metal and concrete, omnidirectional antennas may not penetrate well. Directional antennas can focus the signal in a specific direction, helping to overcome obstacles and extend range. The correct answer is a directional antenna, such as a Yagi or panel antenna.

Answer

Omnidirectional antenna

Answer

Dipole antenna

Answer

Rubber duck antenna

Question 4

A technician is setting up a small office network with a router, a switch, and a wireless access point. The router has only one LAN port. The technician needs to connect the switch and the WAP to the router, but the switch has no uplink port. Which hardware component should the technician use to connect both devices to the router?

Accepted Answer

Connect the router to the switch, then connect the WAP to the switch.. This question tests knowledge of network topology and the use of additional switches. Since the router has only one LAN port, a switch is needed to expand the number of available ports. The correct answer is to connect the router to the switch, and then connect the WAP to the switch. The switch's ports are typically all the same, so no special uplink port is required (modern switches use Auto-MDIX).

Answer

Use a crossover cable to connect the router directly to the WAP.

Answer

Use a hub between the router and the switch.

Answer

Configure the switch as a router to connect to the WAP.

Question 5

A small business uses a router with DHCP enabled, issuing addresses in the 192.168.1.0/24 range. A technician installs a new server with a static IP of 192.168.1.50, but users cannot connect to it. The technician pings 192.168.1.50 from the server itself successfully. What is the most likely cause?

Accepted Answer

Another device on the network has the same IP address.. If the DHCP server assigned 192.168.1.50 to another device, there is an IP address conflict. The server can ping itself because it uses its own IP, but other devices may have the same IP or the server's address is already in use. This tests understanding of IP conflicts and static vs. DHCP assignments.

Answer

The server's subnet mask is set to 255.255.255.0.

Answer

The server's default gateway is missing.

Answer

The server's network cable is faulty.

Question 6

A technician is configuring a new router for a branch office. The ISP provides a public IP of 203.0.113.10/30 for the WAN interface. How many usable IP addresses does the technician have for devices on the WAN link?

Accepted Answer

2. A /30 subnet mask (255.255.255.252) provides 4 total addresses: one network, one broadcast, and two usable. This is commonly used for point-to-point WAN links to conserve public IPs.

Answer

4

Answer

6

Answer

1

Question 7

A client in a dense urban apartment building wants internet service but cannot install a satellite dish due to HOA rules. They have a phone line but no cable TV outlet. Which connection type is most practical and cost-effective?

Accepted Answer

DSL. DSL uses existing phone lines and is widely available in urban areas, making it a practical choice. Cable requires a coaxial outlet, satellite is prohibited, and fiber may not be available in all apartment buildings. DSL offers a balance of availability and cost.

Answer

Cable broadband

Answer

Satellite

Answer

Fiber-optic

Question 8

A user reports that their fiber-to-the-home (FTTH) internet connection works but is slower than expected. The technician finds that the ONT (Optical Network Terminal) is connected to the router via a 100-meter Cat5e cable. What is the most likely issue?

Accepted Answer

The Ethernet cable is damaged or has a bad termination.. The most likely issue is a damaged or poorly terminated Cat5e cable. A 100-meter Cat5e cable is within the maximum length specification for 1 Gbps (100 meters), so the length alone is not the problem. However, a damaged cable or bad termination can cause excessive packet loss, CRC errors, or auto-negotiation failures, resulting in slower throughput even though the link appears to be up.

Answer

The ONT is malfunctioning.

Answer

The Cat5e cable is too long for 1 Gbps.

Answer

The router is not configured for the correct speed.

Question 9

A technician is troubleshooting a DSL connection that syncs at only 1.5 Mbps when the plan is 10 Mbps. The line is 12,000 feet from the central office. What is the most likely cause?

Accepted Answer

The distance from the central office is too great.. DSL speeds degrade significantly with distance due to signal attenuation and noise. At 12,000 feet from the central office, ADSL2+ typically cannot sustain 10 Mbps; 1.5 Mbps is consistent with the maximum achievable rate at that distance. The sync rate is determined by line conditions, not the plan speed, making distance the primary limiting factor.

Answer

The modem is defective.

Answer

The router's firmware needs updating.

Answer

The ISP is throttling the connection.

Question 10

A technician is configuring a new satellite internet connection for a rural home. After aligning the dish, the modem shows 'online' but the user cannot browse the web. What is the most likely cause?

Accepted Answer

The router's MTU setting is too high.. The modem shows 'online', indicating the satellite link is established, but the user cannot browse the web. This points to a Layer 3 or Layer 4 issue rather than a physical alignment problem. Satellite internet often uses a high MTU (e.g., 1500 bytes), but the link may have a lower effective MTU due to encapsulation overhead (e.g., PPPoE or VPN). If the router's MTU is set too high, packets larger than the path MTU will be fragmented or dropped, causing web pages to fail to load while the modem remains online.

Answer

The dish is not aligned properly.

Answer

The modem's firmware is outdated.

Answer

The user's browser is incompatible.

Question 11

A hospital needs to connect multiple buildings across a large campus to share patient records and imaging data. The network must be private, high-speed, and cover the entire campus. Which network type should be implemented?

Accepted Answer

Metropolitan Area Network (MAN). A Metropolitan Area Network (MAN) is the correct choice because it is designed to interconnect multiple locations across a city or large campus, providing private, high-speed connectivity. In this scenario, the hospital requires a network that spans beyond a single building but is confined to a campus-sized area, which fits the MAN scope. Technologies like Metro Ethernet or MPLS can deliver the necessary bandwidth for sharing patient records and imaging data securely.

Answer

Local Area Network (LAN)

Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)

Question 12

A user wants to wirelessly stream music from their smartphone to a Bluetooth speaker in the same room. Which network type is being used for this connection?

Accepted Answer

Personal Area Network (PAN). C is correct because a Bluetooth connection between a smartphone and a speaker operates within a Personal Area Network (PAN). PANs are defined by IEEE 802.15 and cover a short-range, ad-hoc wireless link (typically up to 10 meters) designed for personal device interconnectivity, which matches the Bluetooth streaming scenario exactly.

Answer

Local Area Network (LAN)

Answer

Wide Area Network (WAN)

Answer

Metropolitan Area Network (MAN)

Question 13

A company has two branch offices in different cities. They need to connect their LANs so employees can access resources at both locations securely over the internet. Which network type should be used?

Accepted Answer

Wide Area Network (WAN). A Wide Area Network (WAN) is the correct choice because it connects geographically separated LANs across a large distance, such as between two cities, using public or private infrastructure like the internet. WAN technologies, such as MPLS, leased lines, or IPsec VPNs, provide secure, encrypted tunnels over the internet to ensure data confidentiality and integrity between the branch offices.

Answer

Local Area Network (LAN)

Answer

Metropolitan Area Network (MAN)

Answer

Personal Area Network (PAN)

Question 14

A multinational corporation has offices in New York, London, and Tokyo. They need a private, dedicated network to connect all offices with high reliability and low latency. Which network type should be implemented?

Accepted Answer

Wide Area Network (WAN). A Wide Area Network (WAN) is the correct choice because it is designed to connect geographically dispersed locations, such as offices in different cities or countries, over a large area. WANs provide private, dedicated circuits (e.g., MPLS, leased lines) that offer high reliability and low latency, meeting the multinational corporation's requirements for interconnecting New York, London, and Tokyo.

Answer

Local Area Network (LAN)

Answer

Metropolitan Area Network (MAN)

Answer

Personal Area Network (PAN)

Question 15

A technician is asked to set up a network for a new branch office that will connect back to the main headquarters using a leased line. The branch has 50 employees who need access to centralized databases and email. Which network type best describes the branch office's internal network?

Accepted Answer

Local area network (LAN). The branch office's internal network connects 50 employees within a single physical location, providing shared access to local resources like printers and servers. This fits the definition of a Local Area Network (LAN), which operates over a limited geographic area and uses high-speed technologies such as Ethernet (IEEE 802.3) and Wi-Fi (IEEE 802.11). The leased line to headquarters is a separate WAN connection, but the internal network itself remains a LAN.

Answer

Wide area network (WAN)

Answer

Metropolitan area network (MAN)

Answer

Personal area network (PAN)

Question 16

A customer reports that their home office devices—a laptop, printer, and smartphone—can communicate with each other but cannot access the internet. They have a single router provided by their ISP. Which network type is most likely being used for local communication?

Accepted Answer

Local Area Network (LAN). A Local Area Network (LAN) connects devices within a limited area, such as a home or office, allowing them to share resources like files and printers. The router creates a LAN for local communication, but internet access requires a properly configured WAN connection. The scenario describes a LAN issue, not a PAN (which is too short-range for a whole home) or a WAN/MAN.

Answer

Personal Area Network (PAN)

Answer

Wide Area Network (WAN)

Answer

Metropolitan Area Network (MAN)

Question 17

A user reports that their computer cannot access any network resources, but the link light on the NIC is solid. The technician suspects a faulty cable. Which tool can quickly test the cable's continuity and detect a broken wire?

Accepted Answer

Cable tester. A cable tester sends a small electrical signal through each conductor in the cable and checks for a return signal on the correct pin. If a wire is broken, the tester will indicate an open circuit, confirming the fault. This is the fastest and most direct way to verify continuity in a copper Ethernet cable.

Answer

Multimeter

Answer

Toner and probe

Answer

Crimper

Question 18

A user reports that their wired desktop cannot connect to the network. The technician verifies the link light on the computer's NIC is off. Using a known-good patch cable does not resolve the issue. Which tool should be used to test the wall jack's wiring?

Accepted Answer

Tone generator and probe. A tone generator and probe allow a technician to trace the wall jack back to the patch panel and verify continuity. Since the link light is off and a known-good cable didn't help, the issue may be in the wall jack or its termination, and tracing the cable is the next step.

Answer

Cable tester

Answer

Loopback plug

Answer

Multimeter

Question 19

A customer reports that their new laptop cannot connect to the company's Wi-Fi network, but other devices connect fine. You need to check if the laptop's wireless adapter is functioning properly and can see available networks. Which tool should you use?

Accepted Answer

Wi-Fi analyzer. A Wi-Fi analyzer (option C) is the correct tool because it can scan for available wireless networks, display their SSIDs, signal strengths, and channels, and verify whether the laptop's wireless adapter is detecting any networks at all. This directly addresses the need to check if the adapter is functioning and can see the company's Wi-Fi, isolating the issue to the laptop's wireless hardware or configuration rather than the network itself.

Answer

Cable tester

Answer

Loopback plug

Answer

Multimeter

Question 20

You are troubleshooting a network where users in one department cannot reach a critical server. You need to check if the server's IP address is reachable and measure the round-trip time. Which command-line tool provides this information?

Accepted Answer

ping. The `ping` command uses ICMP Echo Request and Echo Reply messages to test reachability of a target IP address and measures the round-trip time (RTT) in milliseconds. This directly matches the requirement to check if the server's IP address is reachable and to measure the RTT.

Answer

tracert

Answer

nslookup

Answer

netstat