220-1101 Practice Test 39 — 15 Questions

Question 1

A network technician is configuring a small office network. The company wants to ensure that only authorized company devices can connect to the wired network. The network uses a managed switch and a DHCP server. Which security feature should the technician configure on the switch to BEST meet this requirement?

Accepted Answer

802.1X. 802.1X is the correct answer because it provides port-based network access control (PNAC) that authenticates devices before granting access to the wired network. It uses the Extensible Authentication Protocol (EAP) over LAN (EAPoL) to verify credentials against an authentication server (e.g., RADIUS), ensuring only authorized company devices can connect. This meets the requirement precisely by enforcing per-device authentication at the switch port level.

Answer

Port security

Answer

DHCP snooping

Answer

MAC address filtering

Question 2

A network laser printer prints garbled pages when receiving print jobs from one specific user's computer, but prints correctly from all other computers on the same network. The printer has a static IP address and is connected via an unmanaged switch. The technician can ping the printer from the affected computer without any packet loss. Which of the following is the MOST likely cause?

Accepted Answer

The printer driver on the affected computer is corrupted. The printer prints garbled pages only from one specific computer, while other computers on the same network print correctly. This points to a local software issue on that computer rather than a network or printer hardware problem. A corrupted printer driver can cause the print data to be encoded incorrectly, resulting in garbled output, even though network connectivity (ping) is fine.

Answer

The network cable from the affected computer to the switch is faulty

Answer

The print spooler service on the affected computer is stopped

Answer

The USB port on the motherboard of the affected computer is malfunctioning

Question 3

A technician installs two 8 GB DDR4-2666 memory modules into a desktop motherboard that supports DDR4-3200. The system powers on and the BIOS detects 16 GB of RAM. What speed will the memory run at?

Accepted Answer

2666 MHz. The memory will run at 2666 MHz because the system memory speed is determined by the slowest component in the chain. The installed modules are DDR4-2666, and even though the motherboard supports DDR4-3200, the memory controller will clock the RAM at the rated speed of the modules (2666 MHz) unless overclocked or XMP is enabled. The BIOS detects 16 GB correctly, but speed is limited by the module's native JEDEC standard.

Answer

3200 MHz

Answer

2933 MHz

Answer

2133 MHz

Question 4

A technician is troubleshooting a laser printer that produces pages with a horizontal black line across the top of every page. The line is the same width as the page and appears in the same location each time. The technician has already replaced the toner cartridge and the imaging drum. Which of the following printer components should the technician check NEXT?

Accepted Answer

Fuser. The fuser assembly uses heat and pressure to permanently bond toner to the paper. A damaged fuser roller (e.g., a nick, scratch, or melted toner buildup) will imprint a consistent horizontal line across the top of every page because the defect contacts the paper at the same rotational point each time. Replacing the toner cartridge and imaging drum did not resolve the issue, confirming the problem is downstream in the fuser.

Answer

Transfer roller

Answer

Primary corona wire (or charge roller)

Answer

Pickup rollers

Question 5

A small business wants to deploy a customer relationship management (CRM) application for its sales team. The company wants to avoid managing servers, operating systems, or application patches. The sales team needs to access the CRM through a web browser from any device. The company prefers a monthly subscription model based on the number of users. Which cloud service model BEST fits these requirements?

Accepted Answer

Software as a Service (SaaS). The company wants to avoid managing servers, operating systems, or application patches, and needs browser-based access with a monthly subscription per user. Software as a Service (SaaS) delivers a fully managed application over the internet, where the provider handles all infrastructure, platform, and software maintenance, exactly matching these requirements.

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Desktop as a Service (DaaS)

Question 6

A small business uses a cloud-based customer relationship management (CRM) system that is accessed entirely through a web browser. The business does not manage the underlying operating system, middleware, or hardware. Which cloud computing service model does this scenario BEST describe?

Accepted Answer

Software as a Service (SaaS). This scenario describes Software as a Service (SaaS) because the business consumes a fully functional CRM application delivered over the web, with no control over the underlying operating system, middleware, or hardware. The provider manages the entire stack, and the customer only accesses the software via a browser, which is the defining characteristic of SaaS.

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Desktop as a Service (DaaS)

Question 7

A system administrator needs to add a new virtual hard disk to a running virtual machine without powering it off. The hypervisor supports this capability. Which feature should the administrator use?

Accepted Answer

Hot plug. Hot plug (also called hot add) allows a system administrator to add a virtual hard disk to a running virtual machine without powering it off, provided the hypervisor and guest OS support it. This feature leverages the SCSI or SATA hot-plug capability, enabling the virtual controller to detect and enumerate the new disk dynamically. It is commonly used in VMware vSphere and Hyper-V environments to expand storage without downtime.

Answer

Snapshots

Answer

Thin provisioning

Answer

Live migration

Question 8

A small office has 15 workstations connected to a single unmanaged switch, which is connected to a router that provides internet access. Users report that the network is slow. A technician notices that the activity lights on the switch are blinking rapidly and almost constantly, even during off-peak hours. Which of the following is the most likely cause?

Accepted Answer

Excessive broadcast traffic. The rapid and constant blinking of activity lights on an unmanaged switch indicates a high volume of frames being forwarded, which is characteristic of a broadcast storm. In a small network, excessive broadcast traffic (e.g., from ARP requests or NetBIOS name resolutions) can saturate the switch's backplane and all ports, consuming bandwidth and causing slowdowns even during off-peak hours. This occurs because switches forward broadcast frames to all ports except the ingress port, and without broadcast storm control (unmanaged switch), the traffic can overwhelm the network.

Answer

Duplicate IP addresses

Answer

Faulty default gateway

Answer

DNS server failure

Question 9

A technician is troubleshooting a user's wired desktop that intermittently loses network connectivity for short periods (1-2 minutes) several times a day. During the outage, the link light on the NIC remains lit and continuous. The technician has already replaced the Ethernet cable and the NIC. The switch port is configured for auto-negotiation. Which of the following should the technician check NEXT?

Accepted Answer

Check the network driver settings for duplex mismatch.. The correct answer is B. The symptoms—intermittent connectivity with the link light remaining lit—strongly suggest a duplex mismatch. When one side is set to full duplex and the other to half duplex (or auto-negotiation fails), the half-duplex side detects collisions and triggers retransmissions, causing 1–2 minute outages. Since the cable and NIC have been replaced, the next logical step is to check the NIC driver settings for a forced duplex or speed setting that conflicts with the switch port's auto-negotiation.

Answer

Verify the switch port is configured for the correct VLAN.

Answer

Check the DNS server configuration on the computer.

Answer

Disable the firewall to rule out a security issue.

Question 10

A technician is troubleshooting a Windows 10 workstation that cannot access network shares on a file server. The technician confirms that the workstation can ping the server by IP address and by hostname. The technician tests access from another workstation on the same subnet and successfully maps the network drive. On the problematic workstation, the technician runs the command 'net use * \server\share' and receives the error 'System error 53 has occurred. The network path was not found.' Which of the following is the MOST likely cause of this error?

Accepted Answer

The workstation's Windows Firewall is blocking File and Printer Sharing.. The error 'System error 53: The network path was not found' typically indicates that the SMB connection is being blocked at the client side. Since the workstation can ping the server by hostname (DNS resolution works) and another workstation on the same subnet can map the drive, the issue is isolated to the problematic workstation. The most likely cause is that the workstation's Windows Firewall is blocking File and Printer Sharing (which includes SMB traffic on ports 445 and 139), preventing the outbound connection to the server.

Answer

The file server's firewall is blocking incoming SMB connections.

Answer

The workstation's DNS suffix search order is incorrect.

Answer

The file server is using an SMB protocol version that the workstation does not support.

Question 11

A technician is troubleshooting a workstation that lost network connectivity after a lightning storm. The workstation's Ethernet link light on both the NIC and the switch port is solid, but the workstation cannot access any network resources. The technician can ping 127.0.0.1 successfully. When pinging the default gateway (192.168.1.1), the request times out. The technician connects a known-good laptop to the same switch port and cable, and the laptop accesses the network normally. Which of the following is the MOST likely cause?

Accepted Answer

The lightning storm damaged the NIC, causing it to fail at the data link layer while maintaining a physical link.. The solid link light indicates a physical layer (Layer 1) connection is established, and the successful ping to 127.0.0.1 confirms the TCP/IP stack is functioning. However, the inability to ping the default gateway, combined with a known-good laptop working on the same port and cable, isolates the fault to the workstation's NIC. The most likely cause is that the lightning storm damaged the NIC at the data link layer (Layer 2), allowing link pulses (Layer 1) to pass but corrupting frame processing, which prevents successful ARP and IP communication.

Answer

The workstation's IP address is statically configured with an incorrect subnet mask.

Answer

The switch port is configured with the incorrect VLAN, but the link light remains on because the switch port is up.

Answer

The workstation's network cable is faulty and only passes link pulses but not data frames.

Question 12

A technician configures a new workstation with a static IP address of 10.0.0.5, subnet mask 255.255.255.0, default gateway 10.0.0.1, and DNS server 8.8.8.8. The workstation can ping the gateway (10.0.0.1) but cannot ping any external IP addresses like 8.8.8.8 or access the internet. Other workstations on the same network using DHCP are working fine. The router's WAN connection is working. Which of the following is the MOST likely cause?

Accepted Answer

The router is not configured with a route back to the 10.0.0.0 network.. The workstation can ping its default gateway (10.0.0.1), confirming that Layer 2 and Layer 3 connectivity to the local router interface is functional. However, it cannot reach external IPs like 8.8.8.8, which indicates that the router is not forwarding packets from the 10.0.0.0/24 subnet to the WAN. Since other DHCP clients work, the router lacks a static route back to this specific subnet, causing return traffic to be dropped.

Answer

The IP address conflicts with another device on the network.

Answer

The default gateway is in a different subnet.

Answer

The DNS server is not reachable.

Question 13

A small business wants to develop and deploy a custom web application. They do not want to manage any underlying infrastructure, including servers, operating systems, or runtime environments. They want to simply upload their code and let the cloud provider handle scaling and maintenance. Which cloud service model BEST fits this requirement?

Accepted Answer

Platform as a Service (PaaS). Platform as a Service (PaaS) is the correct choice because it provides a complete development and deployment environment in the cloud, abstracting away the underlying infrastructure. The business can upload custom code without managing servers, OS, or runtime, and the cloud provider automatically handles scaling, patching, and maintenance. This directly matches the requirement to avoid infrastructure management while deploying a custom web application.

Answer

Infrastructure as a Service (IaaS)

Answer

Software as a Service (SaaS)

Answer

Anything as a Service (XaaS)

Question 14

A startup is developing a new web application. They want to write code and deploy it without worrying about the underlying operating system, web server, or scaling. Which cloud service model should they choose?

Accepted Answer

Platform as a Service (PaaS). Platform as a Service (PaaS) provides a managed environment where developers can write and deploy code without managing the underlying OS, web server, or scaling. The cloud provider handles the runtime, middleware, and infrastructure, allowing the startup to focus solely on application code. This aligns with the requirement to avoid worrying about the operating system, web server, or scaling.

Answer

Infrastructure as a Service (IaaS)

Answer

Software as a Service (SaaS)

Answer

Desktop as a Service (DaaS)

Question 15

A small office network uses an unmanaged switch to connect 20 workstations to a router. After connecting the 11th workstation, all previously connected workstations begin losing internet connectivity intermittently. The switch link lights remain solid green for all connected devices. The technician discovers that the new workstation has two active network interfaces, both plugged into the same switch. Which of the following is the MOST likely cause?

Accepted Answer

Network loop. The new workstation has two active network interfaces both plugged into the same unmanaged switch, creating a physical network loop. This loop causes broadcast storms and MAC address table instability (the switch repeatedly learns the same MAC address on different ports), which overwhelms the switch and causes intermittent connectivity for all devices. Unmanaged switches lack Spanning Tree Protocol (STP) to detect and block redundant paths, so the loop is not automatically resolved.

Answer

IP address conflict

Answer

Switch is faulty

Answer

Exceeded DHCP scope