220-1201 Practice Test 12 — 15 Questions

Question 1

A technician is configuring a RAID array in a server that requires both high performance and fault tolerance. The server has four identical 2TB SATA HDDs. The RAID controller supports RAID 0, 1, 5, and 10. Which RAID level should the technician choose to meet both requirements?

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

Accepted Answer

RAID 10. This question tests understanding of RAID levels and their trade-offs. RAID 10 (striping + mirroring) provides both performance (striping) and fault tolerance (mirroring), but requires at least 4 drives. RAID 5 offers fault tolerance with parity but has slower write performance. RAID 0 has no fault tolerance, and RAID 1 only provides fault tolerance with no performance gain.

Answer

RAID 0

Answer

RAID 1

Answer

RAID 5

Question 2

A user reports that their new Thunderbolt 4 external GPU (eGPU) is not recognized by their laptop, which has a Thunderbolt 4 port. The eGPU works on another laptop. Which connector-related issue is most likely?

Accepted Answer

The cable used is a passive USB-C cable, not an active Thunderbolt 4 cable.. Thunderbolt 4 requires an active cable for full functionality, and a passive USB-C cable may not carry the PCIe signal needed for eGPU operation. This tests understanding of Thunderbolt cable requirements and the difference between passive and active cables.

Answer

The laptop's Thunderbolt 4 port is disabled in BIOS.

Answer

The eGPU requires a Thunderbolt 3 port, not Thunderbolt 4.

Answer

The laptop's Thunderbolt 4 port is not providing enough power.

Question 3

A network administrator needs to determine the exact model and firmware version of a switch located in a remote wiring closet without physically visiting the site. The switch is configured with an IP address on the management VLAN. Which tool can be used to query the switch's SNMP agent for this information?

Accepted Answer

SNMP management tool. An SNMP management tool can query the switch's SNMP agent using GET requests to retrieve the exact model and firmware version from the system MIB (RFC 1213), specifically the sysDescr (1.3.6.1.2.1.1.1) and sysObjectID (1.3.6.1.2.1.1.2) OIDs. This allows remote, agent-based access without physical site visits, as the switch is reachable via its management VLAN IP address.

Answer

Packet analyzer (e.g., Wireshark)

Answer

Port scanner (e.g., Nmap)

Answer

Wi-Fi analyzer

Question 4

A technician is troubleshooting a network where users can access the internet but cannot reach a specific internal web server by its hostname. Pinging the server's IP address works. What is the most likely issue?

Accepted Answer

The DNS server does not have a record for the server's hostname.. The user can reach the server by IP but not by hostname, which isolates the failure to name resolution rather than routing or connectivity. Since ping to the IP succeeds, the network path and the server itself are fine; the most likely cause is that the DNS server lacks an A (or AAAA) record mapping the hostname to the server's IP. Adding or correcting the DNS record resolves the issue.

Answer

The web server's firewall is blocking ICMP.

Answer

The DHCP server is not assigning correct IP addresses.

Answer

The network switch is dropping packets to the server.

Question 5

A technician is troubleshooting a network where two computers cannot communicate. Computer A has an IP of 192.168.1.10 with subnet mask 255.255.255.0. Computer B has an IP of 192.168.2.20 with subnet mask 255.255.255.0. Both are connected to the same switch. The switch is not configured with VLANs. Why can't the computers communicate?

Accepted Answer

The computers are on different subnets and need a router to communicate.. Computer A (192.168.1.10/24) and Computer B (192.168.2.20/24) are on different subnets because their subnet masks (255.255.255.0) define network IDs of 192.168.1.0 and 192.168.2.0 respectively. A switch operates at Layer 2 and forwards frames based on MAC addresses within the same broadcast domain, but it cannot route traffic between different subnets. For inter-subnet communication, a Layer 3 device such as a router (or a Layer 3 switch) is required to perform routing.

Answer

The switch is blocking the traffic due to MAC address filtering.

Answer

The subnet mask on Computer B is incorrect.

Answer

The default gateway on both computers is not set.

Question 6

A technician is deploying a fleet of tablets for field workers. The tablets need to connect to a cellular network for data, but the company wants to minimize data usage. Which setting should the technician configure on each tablet?

Accepted Answer

Enable data saver mode.. Enabling Data Saver mode restricts background data usage and limits non-essential app activity, directly reducing cellular data consumption. This is the most appropriate setting for field workers who need to stay connected but minimize data costs, as it works at the OS level to restrict background syncs and downloads without disabling connectivity.

Answer

Disable Wi-Fi.

Answer

Enable airplane mode.

Answer

Set the preferred network type to 5G.

Question 7

A technician is deploying a wireless network in a large warehouse with metal shelving. The goal is to provide seamless roaming for handheld scanners. Which technology should the technician implement to ensure clients quickly switch between access points without dropping connections?

Accepted Answer

Enable 802.11r (Fast Roaming) on the access points. 802.11r, also known as Fast BSS Transition or Fast Roaming, enables clients to authenticate and reassociate with a new access point using a cached PMK (Pairwise Master Key) from the initial full authentication, reducing the handshake process from four EAP frames to two. In a warehouse with metal shelving causing signal attenuation, this minimizes the time clients spend scanning and reconnecting, ensuring seamless roaming for handheld scanners without dropping connections.

Answer

Use a wireless mesh topology

Answer

Configure beamforming on each access point

Answer

Deploy MIMO antennas

Question 8

A server in a data center has redundant power supplies (1+1 configuration). One PSU's status LED is amber, and the other is green. The server continues to run normally. What action should be taken?

Accepted Answer

Replace the PSU with the amber LED immediately. An amber LED on a redundant PSU indicates a fault or warning, but the server remains operational on the other PSU. The faulty unit should be replaced as soon as possible to restore redundancy. Ignoring it risks downtime if the second PSU fails.

Answer

Do nothing because the server is still running

Answer

Swap the two PSUs to see if the amber LED follows

Answer

Reset the PSU by unplugging and replugging it

Question 9

A technician is setting up a network printer that supports both LPD (Line Printer Daemon) and IPP (Internet Printing Protocol). The printer must be accessible from Windows and Linux clients. Which port should be opened for IPP?

Accepted Answer

631. IPP (Internet Printing Protocol) uses TCP port 631 by default, as defined in RFC 2911. Since the printer must be accessible from both Windows and Linux clients, opening port 631 allows IPP-based printing, which is natively supported by both operating systems.

Answer

515

Answer

9100

Answer

80

Question 10

A technician is troubleshooting a network where users report intermittent connectivity. The technician finds that the switch logs show excessive CRC errors on multiple ports connected to different workstations. What is the most likely cause of these errors?

Accepted Answer

The Ethernet cables are run too close to power cables. CRC errors indicate data corruption at the physical layer, typically caused by electromagnetic interference (EMI) from nearby power cables. Running Ethernet cables too close to power cables induces noise, corrupting frames and causing CRC mismatches at the switch port.

Answer

The switch is configured with the wrong VLAN assignments

Answer

The workstations have duplicate IP addresses

Answer

The switch firmware is outdated

Question 11

A user reports that their computer cannot connect to a network share. The technician runs ipconfig and sees an IP address of 169.254.1.5. What is the most likely cause?

Accepted Answer

The DHCP server is unavailable or unreachable. The IP address 169.254.1.5 is an Automatic Private IP Addressing (APIPA) address, assigned by Windows when a DHCP discovery fails. This indicates the client could not reach a DHCP server to obtain a valid lease, making the DHCP server unavailable or unreachable the most likely cause.

Answer

The DNS server is not resolving the share name

Answer

The network cable is unplugged or faulty

Answer

The user's account does not have permission to access the share

Question 12

A user complains that they cannot access any websites, but they can ping external IP addresses like 8.8.8.8 successfully. Other devices on the same network work fine. Which network service is most likely failing on this user's computer?

Accepted Answer

DNS. The user can ping external IP addresses (e.g., 8.8.8.8) successfully, which confirms that IP connectivity, routing, and NAT are working. However, they cannot access websites by name, which requires DNS resolution to translate domain names into IP addresses. Since other devices on the same network work fine, the issue is isolated to this computer's DNS client configuration or service, making DNS the most likely failing service.

Answer

DHCP

Answer

NAT

Answer

Proxy

Question 13

A technician is replacing the battery in a slim laptop where the battery is glued inside the chassis. After removing the bottom cover, the technician sees the battery is firmly attached with adhesive. What is the safest method to remove the battery without damaging the laptop?

Accepted Answer

Apply isopropyl alcohol around the battery edges to weaken the adhesive, then gently pry with a plastic spudger.. Isopropyl alcohol (90% or higher) safely weakens the adhesive bond without damaging the battery or surrounding components. Using a plastic spudger to gently pry after applying alcohol minimizes the risk of puncturing the lithium-ion battery, which could cause a fire or chemical leak. This method is the industry-recommended approach for glued-in batteries in slim laptops.

Answer

Use a flathead screwdriver to pry the battery out forcefully.

Answer

Heat the battery with a heat gun to soften the adhesive.

Answer

Use a suction cup to pull the battery straight up.

Question 14

A technician is troubleshooting a network where a user's computer cannot obtain an IP address via DHCP. The computer is connected to a switch, and other devices on the same switch work fine. The technician checks the switch and sees that the port is up and the link light is green. What should the technician check next?

Accepted Answer

Check if the switch port is configured with Port Security that is blocking the MAC address.. Since the switch port is up and other devices on the same switch obtain IP addresses correctly, the DHCP server and the general network path are functional. The most likely cause is a Layer 2 security feature, such as Port Security, which can be configured to block unknown or specific MAC addresses, preventing the computer from communicating with the DHCP server even though the physical link is active.

Answer

Replace the Ethernet cable.

Answer

Reboot the DHCP server.

Answer

Set a static IP address on the computer.

Question 15

A technician is configuring a conference room where a laptop must wirelessly display its screen to a 4K projector without using any cables. The projector supports Miracast. What must the technician verify on the laptop?

Accepted Answer

The laptop supports Miracast and Wi-Fi is enabled.. Miracast uses Wi-Fi Direct to establish a peer-to-peer wireless link between devices, so the laptop must support Miracast and have Wi-Fi enabled. It does not require a shared Wi-Fi network or Bluetooth, as Miracast creates its own direct connection for screen mirroring.

Answer

The laptop has Bluetooth enabled.

Answer

The laptop is connected to the same Wi-Fi network as the projector.

Answer

The laptop has an HDMI port.