220-1201 Practice Test 24 — 15 Questions

Question 1

A user complains that their laptop frequently disconnects from the Wi-Fi when they move to a different room, but other devices in that room work fine. The technician checks the laptop's wireless adapter settings. Which configuration is most likely causing the issue?

Accepted Answer

Power saving mode is enabled on the wireless adapter. Power saving mode can cause the wireless adapter to reduce power or disconnect to save battery, especially when signal strength changes. This often results in intermittent disconnections when moving.

Answer

The SSID is hidden

Answer

The wireless mode is set to 802.11a only

Answer

The channel width is set to 40 MHz

Question 2

A technician is configuring a small network with five computers and a printer. The network must use private IP addresses and allow all devices to communicate. The technician assigns IPs manually but forgets to set a default gateway on one computer. Which functionality will be lost on that computer?

Accepted Answer

Ability to access the internet. The default gateway is required for routing traffic to other networks, such as the internet. Without it, the computer can still communicate with devices on the same subnet (local LAN) but cannot reach external networks.

Answer

Ability to communicate with the printer

Answer

Ability to obtain an IP address via DHCP

Answer

Ability to resolve DNS names

Question 3

A network administrator needs to segment traffic between the accounting and HR departments to prevent unauthorized access, while still allowing both to reach the internet. The company uses a single managed switch and a router. Which configuration approach meets these requirements?

Accepted Answer

Configure VLANs on the switch and set up a trunk port to the router with subinterfaces. VLANs logically separate network traffic on the same switch, allowing different departments to be isolated. A trunk port carries multiple VLANs to the router, which can route between them and to the internet using a router-on-a-stick configuration.

Answer

Create two separate subnets and connect each department to a different physical switch

Answer

Assign static IPs to all devices and enable MAC address filtering on the switch

Answer

Use a firewall between the two departments and disable inter-VLAN routing

Question 4

A technician is troubleshooting a network where users on one floor cannot access a server on another floor. Both floors are connected via a single fiber optic link. The technician checks the link and sees the switch port shows 'err-disabled' status. What is the most likely cause of this state?

Accepted Answer

Port security has been violated. An 'err-disabled' state on a switch port typically occurs due to a port security violation, such as too many MAC addresses detected, or a loop detection mechanism like BPDU guard. This indicates a security or configuration issue that disabled the port automatically.

Answer

The fiber cable is damaged

Answer

A duplex mismatch exists between the switches

Answer

The VLAN configuration is incorrect

Question 5

A company's IT policy requires that all network traffic from the guest Wi-Fi be isolated from the internal corporate network. The guest network uses a separate SSID and VLAN. Which additional configuration is necessary to ensure complete isolation?

Accepted Answer

Implement an ACL that denies traffic from the guest VLAN to the corporate VLAN. Access Control Lists (ACLs) on the router or firewall can block traffic between VLANs. Even with separate VLANs, inter-VLAN routing must be explicitly denied to prevent guest devices from reaching the corporate network.

Answer

Enable DHCP snooping on the guest VLAN

Answer

Configure a router-on-a-stick with subinterfaces

Answer

Set the guest network to use a different subnet mask

Question 6

A small office with 15 employees uses a single switch to connect all workstations. Users report that the network becomes extremely slow during peak hours, and some packets are being dropped. The switch is a 10/100 model with a 1 Gbps uplink to the router. What is the most likely cause of the slowdown?

Accepted Answer

The switch's ports are only 100 Mbps, causing a bottleneck when multiple users are active.. This question tests understanding of switch port speeds and network congestion. A 10/100 switch limits each workstation to 100 Mbps, which can cause bottlenecks with multiple users. Upgrading to a Gigabit switch would provide 1000 Mbps per port, alleviating the slowdown.

Answer

The switch is not a managed switch and cannot prioritize traffic.

Answer

The router's uplink port is faulty and needs to be replaced.

Answer

The switch is a hub, not a switch, causing collisions.

Question 7

A user reports that their desktop computer cannot connect to the internet, but other devices on the same network work fine. You check the patch cable from the wall jack to the PC and find it is a Cat5e cable. The PC's network adapter shows a link light, but no activity. What should you do first?

Accepted Answer

Check the IP address configuration on the PC to see if it has a valid address.. This question tests basic network troubleshooting steps. A link light indicates physical connectivity, but no activity suggests a configuration issue. Checking the IP address assignment is the logical first step before replacing hardware.

Answer

Replace the Cat5e cable with a Cat6 cable.

Answer

Reboot the switch in the wiring closet.

Answer

Replace the network adapter in the PC.

Question 8

A company is setting up a new branch office with 50 workstations and needs to connect them to the existing corporate network across a city. The connection must be dedicated and provide consistent bandwidth. Which type of WAN hardware should be installed at the branch office?

Accepted Answer

A CSU/DSU. This question tests knowledge of WAN hardware for dedicated connections. A CSU/DSU is used for T1 or leased lines, which provide dedicated bandwidth. Other options are for different connection types.

Answer

A DSL modem

Answer

A cable modem

Answer

A wireless access point

Question 9

A user complains that their wireless connection drops frequently, but only when they are in the conference room. Other areas of the office have stable connections. What is the most likely cause?

Accepted Answer

The conference room has thick walls or electronic interference that weakens the signal.. This question tests understanding of wireless interference and signal propagation. Physical obstacles like metal studs or electronic interference can weaken signals. The conference room's environment is the key factor.

Answer

The user's laptop has a faulty wireless adapter.

Answer

The access point is overloaded with too many connections.

Answer

The access point's firmware is outdated.

Question 10

A small business has a single router with four built-in switch ports. They need to connect 12 wired devices. They have a 24-port unmanaged switch. Which configuration will provide the best network performance and connectivity?

Accepted Answer

Connect the switch to one of the router's LAN ports, then connect all 12 devices to the switch.. This question tests understanding of network topology and switch use. Connecting all devices to a single switch and then uplinking that switch to the router is the most efficient, as it keeps traffic local and uses the router only for internet access.

Answer

Connect all 12 devices directly to the router's four ports using splitters.

Answer

Connect half the devices to the router and half to the switch, then connect the switch to the router.

Answer

Use the router as a switch by disabling its routing functions.

Question 11

A technician is setting up a new wireless network for a warehouse. The warehouse has metal shelving and concrete walls. Which wireless standard should the technician choose to maximize range and penetration through obstacles?

Accepted Answer

802.11n. This question tests knowledge of wireless standards and their characteristics. 2.4 GHz signals (like 802.11n) have better range and penetration through obstacles than 5 GHz signals, making them ideal for environments with many barriers.

Answer

802.11ac

Answer

802.11ax (Wi-Fi 6)

Answer

802.11a

Question 12

A company's network uses a router with a built-in 4-port switch. The IT manager wants to segment the network into two separate broadcast domains for security. What additional hardware is required?

Accepted Answer

A managed switch. This question tests understanding of VLANs and network segmentation. A managed switch is required to create VLANs, which separate broadcast domains. An unmanaged switch cannot do this, and a router alone cannot create multiple broadcast domains without multiple interfaces.

Answer

A second router

Answer

A hub

Answer

A wireless access point

Question 13

A user reports that their VoIP phone works but the connected PC cannot access the network. The phone is connected to the wall jack, and the PC is connected to the phone's passthrough port. What is the most likely cause?

Accepted Answer

The switch port is not configured for the data VLAN, so the PC cannot get an IP address.. This question tests understanding of VoIP phone pass-through ports and VLAN configuration. Many VoIP phones use a separate VLAN for voice and data. If the switch port is not configured for the data VLAN, the PC will not get network access.

Answer

The PC's network cable is faulty.

Answer

The VoIP phone's passthrough port is disabled.

Answer

The PC's network adapter is set to a static IP address that conflicts with the phone.

Question 14

A network administrator is deploying a new wireless network in a large office building. They need to ensure seamless roaming for users moving between floors. The building has concrete floors and metal studs. Which hardware configuration will best support this requirement?

Accepted Answer

Deploy thin access points connected to a wireless LAN controller.. This question tests advanced knowledge of wireless deployment and roaming. Thin access points with a wireless controller allow centralized management and fast roaming, as the controller coordinates handoffs between APs. Thick APs or standalone units do not support seamless roaming as effectively.

Answer

Install multiple thick access points with overlapping channels.

Answer

Use a single high-power access point in the center of the building.

Answer

Use mesh access points with wireless backhaul.

Question 15

A company is upgrading its network to support 10 Gbps speeds for a server farm. The existing cabling is Cat6a, and the switches are Gigabit. The IT manager wants to minimize cost while achieving 10 Gbps. Which hardware change is required?

Accepted Answer

Install 10 Gbps switches and use the existing Cat6a cabling.. This question tests knowledge of cabling standards and switch capabilities. Cat6a supports 10 Gbps up to 100 meters, so the cabling is sufficient. The bottleneck is the switches, which must be upgraded to 10 Gbps models. SFP+ modules can be used for fiber connections if needed, but the question focuses on copper.

Answer

Replace the Cat6a cabling with Cat7 cabling.

Answer

Replace the switches with Gigabit models that have SFP+ ports for fiber.

Answer

Add a repeater to boost the signal on the existing Cat6a cabling.