220-1201 Practice Test 25 — 15 Questions

Question 1

A small office has a single internet connection and needs to provide wired network access to 20 computers. They also need to allow guests to connect wirelessly but keep the guest traffic separate from the internal network. Which single device can handle both wired switching and wireless access with VLAN support?

Accepted Answer

Wireless router. A wireless router or a wireless access point integrated into a switch can provide both wired and wireless connectivity. However, the key requirement is VLAN support to isolate guest traffic. A wireless router with VLAN capabilities can meet all needs, but a standard wireless router without VLAN support cannot separate traffic. A switch alone provides no wireless, and an access point alone provides no switching. The correct answer is a wireless router with VLAN support, but since that's not an option, a wireless access point connected to a managed switch is the best fit. Actually, the correct device is a wireless router with VLAN capabilities, but in the options, 'Wireless router' is the most common device that can do both. Given the options, a wireless router is the correct choice as it typically includes a switch and can support VLANs if configured.

Answer

Managed switch

Answer

Wireless access point

Answer

Hub

Question 2

A user reports that their wired connection is intermittent. They are using a Cat5e cable connected to a 1000BASE-T switch. The link light on the switch port is blinking rapidly. What is the most likely cause of the intermittent connection?

Accepted Answer

The cable is damaged or has a loose connector. A rapidly blinking link light typically indicates traffic activity, but if the connection is intermittent, it could be due to a faulty cable or improper termination. However, the question specifies the link light is blinking rapidly, which is normal for active traffic. The intermittent issue might be from electromagnetic interference or a loose connection. The correct answer is a faulty cable, as it's the most common cause of intermittent wired connections.

Answer

The switch port is set to half-duplex

Answer

The network card is configured for 10 Mbps

Answer

The switch is overloaded with traffic

Question 3

A company is deploying a new VoIP phone system. Each desk needs both a computer and a phone connected to the network. To minimize cabling, the phone will be connected to the wall jack, and the computer will connect to the phone. Which feature must the switch ports support to ensure both devices receive network access?

Accepted Answer

VLAN tagging (802.1Q). This scenario describes a typical VoIP deployment where the phone acts as a pass-through for the computer. The switch port must support VLAN tagging to separate voice and data traffic, but the key feature is Power over Ethernet (PoE) if the phone is powered by the switch. However, the question asks for both devices to receive network access, which is handled by the switch port's ability to carry multiple VLANs. The correct answer is VLAN tagging (802.1Q) to separate voice and data traffic on the same port.

Answer

PoE (Power over Ethernet)

Answer

Port mirroring

Answer

Link aggregation

Question 4

A customer complains that their wireless network is slow and frequently drops connections. They live in a densely populated apartment building. The technician checks the wireless router and sees it is using channel 1. What is the most likely cause of the issue?

Accepted Answer

There is interference from other wireless networks on the same channel. In a dense area, overlapping Wi-Fi channels cause interference. Channel 1 is commonly used, but if neighboring networks are also on channel 1 or 6, it can cause congestion. The correct answer is co-channel interference from neighboring networks. The technician should use a Wi-Fi analyzer to find a less congested channel.

Answer

The router is too far from the devices

Answer

The router's firmware is outdated

Answer

The router is using 5 GHz instead of 2.4 GHz

Question 5

A technician is installing a new network switch in a server room. The switch has 48 ports and needs to connect to the existing network backbone via fiber optic cable. The technician has a 10GBASE-SR SFP+ module. Which type of fiber optic cable should be used to ensure compatibility?

Accepted Answer

Multimode fiber (OM3). 10GBASE-SR is designed for multimode fiber (MMF) over short distances, typically up to 300 meters. Using single-mode fiber (SMF) would not work because the transceiver is optimized for multimode. The correct answer is multimode fiber (OM3 or OM4).

Answer

Single-mode fiber (OS2)

Answer

Cat6a twisted pair

Answer

Coaxial cable

Question 6

During a network upgrade, a technician needs to connect a legacy printer that only has a USB port to the network. The printer is in a location without a nearby computer. Which device should the technician use to enable network printing?

Accepted Answer

External print server. A print server is designed to connect a USB printer to a network, allowing it to be shared without a dedicated computer. A USB hub would not provide network connectivity, and a wireless bridge could work but is less direct. The correct answer is an external print server.

Answer

USB hub

Answer

Wireless access point

Answer

Network switch

Question 7

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 8

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 9

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 10

A network administrator needs to connect two switches that are 200 meters apart. The connection must support 1 Gbps speed. The administrator has Cat5e cable available. However, Cat5e is only rated for 100 meters at 1 Gbps. Which device can be used to extend the distance without replacing the cable?

Accepted Answer

Network extender (repeater). To extend Ethernet beyond 100 meters, a repeater or a network extender can regenerate the signal. A switch can also act as a repeater if placed in between, but the question implies using existing cable. A media converter changes media type but not distance. The correct answer is a network extender or a repeater.

Answer

Media converter

Answer

PoE injector

Answer

Load balancer

Question 11

A customer reports that their desktop computer, which is connected to the network via a wall jack, can access the internet but cannot see other computers on the same local network. The network uses a single switch and a router. What is the most likely misconfiguration causing this issue?

Accepted Answer

The computer's network profile is set to 'Public', disabling Network Discovery.. This question tests understanding of the difference between a hub and a switch. A switch forwards frames based on MAC addresses and creates separate collision domains, but it does not inherently prevent devices from seeing each other on the same VLAN. The issue is likely that the switch ports are configured in separate VLANs, isolating traffic. However, the most common simple misconfiguration is that the device is connected to a hub instead of a switch, which would cause collisions but not prevent visibility. The correct answer is that the switch is functioning correctly; the problem is likely that the computer's network profile is set to 'Public' instead of 'Private' in Windows, which enables Network Discovery.

Answer

The switch is a hub, not a switch.

Answer

The router is blocking multicast traffic.

Answer

The Ethernet cable is a crossover cable.

Question 12

A small office has a network with a single switch and a wireless access point (WAP). Users on the wired network can access the internet, but wireless users cannot. The WAP shows a solid green power LED and a blinking amber activity LED. What is the most likely cause?

Accepted Answer

The Ethernet cable from the WAP to the switch is faulty or not securely connected.. This question tests knowledge of WAP connectivity and LED indicators. The solid green power LED indicates the WAP is powered on, but the blinking amber activity LED suggests there is traffic but no successful connection to the wired network. The most likely issue is that the WAP is not properly connected to the switch, either due to a bad cable or a port issue. The correct answer is that the Ethernet cable from the WAP to the switch is faulty or not securely connected.

Answer

The WAP is configured with the wrong SSID.

Answer

The switch port is configured as a trunk port.

Answer

The WAP's wireless radio is disabled in the firmware.

Question 13

A technician is deploying a new network in a warehouse and needs to connect two separate switches that are 120 meters apart. The cable run must support 1 Gbps speeds. Which networking hardware component should be used to ensure reliable connectivity?

Accepted Answer

Install a switch at the 60-meter midpoint and use two Cat6 cables.. This question tests knowledge of Ethernet distance limitations and the use of repeaters or switches to extend networks. Standard Cat5e/6 cabling is limited to 100 meters for 1 Gbps. Since the distance is 120 meters, a switch (which acts as a repeater) can be placed in the middle to regenerate the signal. The correct answer is to use a switch in between, as it will extend the network while maintaining speed.

Answer

Use a single 120-meter Cat6 cable.

Answer

Use a fiber optic cable with media converters on both ends.

Answer

Replace one switch with a hub to increase signal strength.

Question 14

A user complains that their VoIP phone intermittently loses audio during calls. The phone is connected to a PoE switch. The technician checks the switch and sees that the port's PoE power budget is at 95% capacity. What is the most likely cause of the audio drops?

Accepted Answer

The switch is power-cycling the phone due to PoE power budget constraints.. This question tests understanding of Power over Ethernet (PoE) power budgeting. When a PoE switch's power budget is near capacity, it may intermittently power down low-priority devices to prevent overload, causing the phone to reset or lose power. The correct answer is that the switch is power-cycling the phone due to power budget constraints.

Answer

The Ethernet cable is too long, causing signal attenuation.

Answer

The VoIP phone is faulty and needs replacement.

Answer

The switch port is configured with a VLAN mismatch.

Question 15

A company is setting up a guest wireless network in a conference room. They want to ensure that guests can access the internet but cannot communicate with internal corporate devices. The network uses a single router and a switch. Which configuration on the router will best achieve this?

Accepted Answer

Create a separate VLAN for the guest network and apply an ACL to block traffic to the internal network.. This question tests knowledge of VLANs and network segmentation. To isolate guest traffic from internal devices, the best practice is to create a separate VLAN for the guest network and configure access control lists (ACLs) to block inter-VLAN traffic. The correct answer is to set up a guest VLAN with an ACL that denies traffic to the internal subnet.

Answer

Configure the router to use DHCP for the guest network.

Answer

Disable the SSID broadcast for the guest network.

Answer

Use a wireless access point with a built-in firewall.