220-1101 Practice Test 9 — 10 Questions

Question 1

A technician is adding a wireless access point (AP) in an outbuilding connected via Ethernet to the main office network (192.168.1.0/24). After configuring the AP with a static IP of 192.168.1.250, clients can connect to Wi-Fi but cannot access the internet. The main office devices have no issues. What is the most likely cause?

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

Accepted Answer

The new AP has its DHCP server enabled. The most likely cause is that the new AP has its DHCP server enabled. When the AP assigns IP addresses to clients via its own DHCP, those clients receive an IP address from a different subnet or scope than the main office network (192.168.1.0/24). This prevents them from reaching the default gateway (e.g., 192.168.1.1) and thus the internet, while the AP itself remains reachable on its static IP. Disabling the AP's DHCP server and allowing clients to obtain addresses from the main network's DHCP server resolves the issue.

Answer

The SSID on the new AP differs from the main network's SSID

Answer

The Ethernet cable connecting the AP is a crossover cable

Answer

The switch feeding the AP is not configured for VLAN 1

Question 2

A technician is troubleshooting a server with a RAID 5 array consisting of three hard drives. The server logs show a failed drive, and the array status is 'Degraded'. The technician replaces the failed drive with a new drive of the same model and capacity. After the rebuild process completes, the array status remains 'Degraded'. The server's OS does not show any new disk errors. Which of the following should the technician check NEXT?

Accepted Answer

Check the RAID controller's cache battery status. After a RAID 5 rebuild completes but the array remains 'Degraded', the most likely cause is that the RAID controller's write-back cache could not be flushed to the new drive. A failed or missing cache battery forces the controller to operate in write-through mode, which can prevent the array from returning to a healthy state even after a successful rebuild. Checking the cache battery status is the correct next step because it directly affects the controller's ability to commit cached writes and finalize the array status.

Answer

Check the S.M.A.R.T. status of the remaining original drives

Answer

Check the firmware version of the new hard drive

Answer

Check the SAS cable connecting the drives

Question 3

A technician is troubleshooting a desktop computer that does not power on. The motherboard's power LED is lit. When the power button is pressed, no fans spin and no beeps occur. The technician uses a multimeter to test the power supply. The purple wire (+5VSB) reads 5.1V. The green wire (PS_ON) reads 0V when the power button is pressed. However, all other pins on the main power connector show 0V. Which of the following is the most likely cause?

Accepted Answer

The power supply unit is faulty.. The +5VSB (purple wire) reading of 5.1V confirms the standby power rail is working, and the PS_ON (green wire) dropping to 0V when the power button is pressed indicates the motherboard is correctly asserting the power-on signal. However, all other pins showing 0V means the power supply is not turning on its main outputs (+12V, +5V, +3.3V). This is a classic symptom of a faulty power supply unit (PSU) that fails to energize the main rails despite receiving a valid PS_ON signal.

Answer

The motherboard is faulty.

Answer

The power button is defective.

Answer

The CPU is not seated properly.

Question 4

A network technician is troubleshooting inter-VLAN routing. Clients on VLAN 10 (192.168.10.0/24) cannot communicate with servers on VLAN 20 (192.168.20.0/24). The router has subinterfaces for both VLANs and is connected to a layer 2 switch. The switch port connecting to the router is configured as an access port in VLAN 10. An ACL on the router is configured to permit all traffic between the VLANs. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The switch port is not configured as a trunk. The switch port connecting to the router is configured as an access port in VLAN 10, which means it can only carry traffic for VLAN 10. For inter-VLAN routing, the router's subinterfaces need to receive frames tagged with their respective VLAN IDs. A trunk port (802.1Q) must be used on the switch side to allow both VLAN 10 and VLAN 20 traffic to reach the router. Without a trunk, frames from VLAN 20 are dropped at the switch port, preventing communication.

Answer

The ACL on the router is misconfigured

Answer

The default gateway on the servers is set incorrectly

Answer

VLAN 20 is not defined on the switch

Question 5

A technician is upgrading a desktop computer with a new graphics card that requires a 6-pin PCIe power connector. The existing power supply has sufficient wattage but does not have any PCIe power cables. Which of the following should the technician do to BEST resolve this issue?

Accepted Answer

Replace the power supply with one that has PCIe power cables. The existing power supply lacks PCIe power cables, and using adapters (Molex or SATA) can overload the power supply's 12V rail or cause instability due to inadequate current delivery. Replacing the power supply with one that has native PCIe connectors ensures proper power delivery and safety, as PCIe connectors are rated for up to 75W per 6-pin cable, while adapters may not handle sustained loads reliably.

Answer

Use a Molex-to-PCIe power adapter

Answer

Use a SATA-to-PCIe power adapter

Answer

Leave the PCIe power connector unplugged and install the card

Question 6

A user reports that after moving their desktop computer to a new desk, the network connection no longer works. The technician notices that the Ethernet cable is plugged into the computer and the wall jack, but the link lights on the computer's NIC and the wall jack are off. The cable is a flat-style Cat5e cable that came with the computer. Which of the following is the most likely cause?

Accepted Answer

The cable is damaged from bending. Flat-style Ethernet cables are more susceptible to damage from bending or kinking than round cables because their conductors are arranged in a parallel plane, which can cause conductor fractures or impedance mismatches when flexed. Since the cable was moved and the link lights are off on both the NIC and the wall jack, the most likely cause is physical damage to the cable from bending during the move, breaking the electrical continuity.

Answer

The cable is not Cat6

Answer

The wall jack is not terminated properly

Answer

The NIC is disabled in the OS

Question 7

A company runs a web application on a virtual machine in a public cloud. During a marketing campaign, the application experiences a sudden spike in traffic. The cloud platform automatically adds more virtual server instances to handle the load and then removes them when traffic subsides. Which cloud computing characteristic does this represent?

Accepted Answer

Rapid elasticity. Rapid elasticity is the cloud characteristic that enables resources to scale out (add instances) and scale in (remove instances) automatically in response to demand spikes, such as during a marketing campaign. This is distinct from resource pooling, which refers to multi-tenant sharing of physical infrastructure, not dynamic scaling.

Answer

Resource pooling

Answer

Measured service

Answer

On-demand self-service

Question 8

A company runs a private cloud with multiple virtualization hosts. To meet an SLA requirement, the IT administrator needs to ensure that if a physical host fails, the virtual machines running on that host are automatically restarted on another healthy host with minimal manual intervention. Which virtualization feature should the administrator implement?

Accepted Answer

High availability. High availability (HA) is the correct feature because it automatically detects a physical host failure and restarts the affected virtual machines on another healthy host within the cluster, meeting the SLA requirement for minimal manual intervention. HA relies on a heartbeat mechanism between hosts and a management platform (e.g., vSphere HA) to trigger the restart process without requiring user action.

Answer

Load balancing

Answer

Live migration

Answer

Resource pooling

Question 9

A technician is upgrading a desktop computer by installing a new high-end graphics card that requires two 8-pin PCIe power connectors. The existing power supply unit (PSU) is a 500W unit with only one 8-pin connector. The technician uses a Y-splitter adapter to power both connectors on the GPU from the single 8-pin rail. After powering on, the computer boots but the display remains blank, and the GPU's fans do not spin. Which of the following is the MOST likely cause?

Accepted Answer

The power supply does not provide enough wattage for the GPU. The most likely cause is that the 500W power supply does not provide enough wattage for the new high-end graphics card. Even though the Y-splitter adapter allows two physical connections, it draws power from a single 8-pin rail, which is limited to 150W (plus 75W from the PCIe slot). A high-end GPU typically requires 250W or more, and the total system load may exceed the PSU's capacity, causing the GPU to fail to initialize and its fans not to spin.

Answer

The GPU is not properly seated in the PCIe slot

Answer

The Y-splitter adapter is defective

Answer

The monitor cable is not correctly connected

Question 10

A technician is replacing the storage drive in a desktop computer. The motherboard has an M.2 slot that supports both SATA and NVMe interfaces. The technician installs an NVMe M.2 SSD into this slot. Which of the following statements is true?

Accepted Answer

The SSD will operate at NVMe speeds as long as the slot is configured for PCIe connectivity.. The M.2 slot on the motherboard supports both SATA and NVMe interfaces, but the NVMe protocol operates over PCIe lanes. When an NVMe M.2 SSD is installed, it will communicate using the PCIe bus, achieving NVMe speeds, provided the slot is electrically configured for PCIe connectivity (which is standard for NVMe support). The slot's compatibility with SATA does not force the NVMe drive to use SATA protocol; the drive negotiates the highest supported interface.

Answer

The SSD will operate at SATA speeds because the slot supports both.

Answer

The SSD will require a separate SATA power cable from the power supply.

Answer

The SSD must be a SATA M.2 type to work in this slot.