220-1201 Practice Exam 61 — 20 Questions

Question 1

A user reports that their iPhone cannot send or receive MMS messages, but SMS works fine. They have enabled cellular data. What is the most likely missing configuration?

Accepted Answer

The MMS APN settings are incorrect or missing.. B is correct because MMS requires a properly configured APN (Access Point Name) to establish the data connection for sending and receiving multimedia content. Since SMS works (which uses the control channel, not data), but MMS fails despite cellular data being enabled, the most likely issue is that the MMS APN settings are incorrect or missing. Without the correct APN, the device cannot route MMS traffic through the carrier's multimedia messaging center.

Answer

The phone's iMessage is disabled.

Answer

The phone is in Airplane Mode.

Answer

The recipient's phone does not support MMS.

Question 2

A technician is configuring a company-issued tablet for a sales representative who frequently works from a car. The tablet needs internet access for CRM software and GPS navigation. Which mobile network connectivity option is most appropriate for this scenario?

Accepted Answer

Use a tablet with an integrated cellular modem and a company data plan.. A tablet with an integrated cellular modem and a company data plan provides dedicated, always-on mobile broadband connectivity independent of external devices or Wi-Fi hotspots. This ensures reliable internet access for CRM and GPS navigation even while the sales representative is driving between locations, without draining a smartphone battery or depending on inconsistent public Wi-Fi.

Answer

Connect the tablet to a personal hotspot from the sales rep's smartphone.

Answer

Install a Wi-Fi extender in the car to boost nearby public Wi-Fi signals.

Answer

Rely on Bluetooth tethering to a laptop for internet access.

Question 3

A customer reports that their smartphone can connect to Wi-Fi at home but fails to connect to the company's 5 GHz Wi-Fi network in the office. Other devices connect fine. What is the most likely cause?

Accepted Answer

The smartphone is too far from the office access point for 5 GHz.. The smartphone connects to Wi-Fi at home but fails on the company's 5 GHz network, while other devices connect fine. This points to a client-side range issue: 5 GHz signals have higher attenuation and shorter effective range than 2.4 GHz, so if the smartphone is too far from the office access point, it may detect the network but be unable to maintain a stable connection, whereas other devices closer to the AP connect successfully.

Answer

The smartphone's Wi-Fi antenna is damaged.

Answer

The office access point is configured for 2.4 GHz only.

Answer

The smartphone's Wi-Fi driver needs updating.

Question 4

A user has an iPhone that will not install a new app from the App Store, displaying a message that the app is 'unable to be installed'. The device has plenty of free storage. What should a technician check first?

Accepted Answer

Verify that the Apple ID is not locked or restricted.. When an iPhone has sufficient storage but fails to install an app with an 'unable to be installed' message, the most common cause is an issue with the Apple ID account, such as being locked, restricted, or having payment problems. Apple's App Store installation process requires a valid, unlocked Apple ID to authenticate the download and verify entitlements. Checking the Apple ID status is the first logical step before exploring other potential causes.

Answer

Check if the app is compatible with the iOS version.

Answer

Reset the phone's network settings.

Answer

Perform a factory reset of the device.

Question 5

A user reports that after a recent iOS update, their banking app crashes every time they try to log in. Other apps work fine. The app was working before the update. What is the most likely cause and solution?

Accepted Answer

The banking app is not compatible with the new iOS version and needs an update from the developer.. The most likely cause is that the banking app is not yet compatible with the new iOS version. After a major iOS update, apps that rely on specific APIs or frameworks (e.g., Keychain, WebKit, or Secure Enclave) may break if the developer has not updated the app to support the new OS. The solution is for the developer to release an update that targets the new iOS SDK, and for the user to install that update from the App Store.

Answer

The iOS update corrupted the app's data; reinstalling the app will fix it.

Answer

The user's account has been locked due to multiple failed login attempts.

Answer

The iOS update changed the device's security settings, blocking the app.

Question 6

A technician is troubleshooting an iPhone that cannot install or update any apps from the App Store. The device is connected to Wi-Fi, and other internet services (Safari, email) work. What should the technician check first?

Accepted Answer

Verify that the Apple ID is signed in and has no payment issues.. The most common cause for an iPhone being unable to install or update apps while other internet services work is an issue with the Apple ID, such as a payment method that has expired or a billing problem. The App Store requires a valid payment method on file even for free apps, and the device will block downloads until the account is resolved. Since Safari and email function normally, the network connectivity is fine, narrowing the issue to account authentication or authorization.

Answer

Check if the date and time are set correctly on the iPhone.

Answer

Reset the iPhone's network settings.

Answer

Check if the iPhone is in Low Power Mode.

Question 7

A technician is configuring a company-issued Android phone for a remote employee. The employee needs to access corporate email via the Gmail app and use a VPN for secure connections. After setup, the user cannot send emails from the Gmail app, but can receive them. What should the technician check first?

Accepted Answer

Check the outgoing mail server (SMTP) settings in the Gmail app.. The Gmail app on Android uses SMTP (Simple Mail Transfer Protocol) for sending emails. Since the user can receive emails (IMAP/POP works) but cannot send, the most likely cause is incorrect SMTP server settings—such as the server address, port (e.g., 587 with STARTTLS), or authentication credentials. The technician should verify these outgoing mail server configurations first, as they are independent of VPN connectivity or storage issues.

Answer

Verify that the VPN is connected and routing traffic correctly.

Answer

Ensure the device has enough free storage space.

Answer

Reinstall the Gmail app from the Play Store.

Question 8

A technician is setting up a new file server that needs to be accessible to employees both from the local network and remotely over the internet. The server will host shared folders. Which protocol should the technician ensure is properly configured and secured on the server for file access?

Accepted Answer

SMB. SMB (Server Message Block) is the native protocol used by Windows for file and printer sharing, and it is the correct choice for a file server that needs to be accessible both locally and remotely. SMB supports authentication, encryption (via SMB 3.x), and can be securely tunneled over VPN or through port 445 with proper firewall rules, making it ideal for shared folder access in a mixed network environment.

Answer

FTP

Answer

NFS

Answer

HTTP

Question 9

A technician is configuring a network printer for secure printing using IPsec. After enabling IPsec on the printer and the print server, print jobs fail to reach the printer. The technician can ping the printer from the server. Which protocol negotiation step is most likely failing?

Accepted Answer

The IPsec security association (SA) is not being established due to IKE failure.. IPsec requires the Internet Key Exchange (IKE) protocol to negotiate and establish a security association (SA) between the printer and the print server. Since the technician can ping the printer, basic network connectivity (including ARP and IP routing) is working, but the print jobs fail because the IPsec SA is not established. An IKE failure—often due to mismatched pre-shared keys, authentication methods, or IKE phase parameters—prevents the encrypted tunnel from forming, causing all IPsec-protected traffic to be dropped.

Answer

The printer is not responding to ARP requests.

Answer

The printer's TCP/IP stack is misconfigured.

Answer

The print server is using the wrong port number.

Question 10

During a network security audit, a technician finds that an employee is using a protocol that allows remote control of a computer with full graphical interface but without encryption. Which protocol should be replaced with a more secure alternative?

Accepted Answer

RDP. RDP (Remote Desktop Protocol) provides full graphical interface remote control but, by default in older versions or misconfigurations, transmits data without encryption, exposing keystrokes, screen content, and credentials to eavesdropping. The secure alternative is to use RDP with TLS/SSL encryption (e.g., via Network Level Authentication) or a VPN, or to replace it with an encrypted remote desktop solution like SSH with X11 forwarding or a modern RDP client enforcing encryption.

Answer

SSH

Answer

Telnet

Answer

FTP

Question 11

A customer reports that their new all-in-one printer can scan and copy locally, but they cannot send scanned documents to their email address. The printer is connected to the office network and can ping other devices. Which protocol is most likely misconfigured on the printer?

Accepted Answer

SMTP. The printer can scan and copy locally and is reachable on the network (ping works), but it cannot send scanned documents to an email address. This indicates the printer is configured to use SMTP (Simple Mail Transfer Protocol) to send the email, but the SMTP server settings (server address, port, authentication, or encryption) are likely incorrect or missing. SMTP is the standard protocol for sending outgoing email, which is exactly what the printer needs to deliver the scanned document as an email attachment.

Answer

FTP

Answer

IMAP

Answer

SNMP

Question 12

A user needs to transfer files securely between two Linux servers over the internet. Which port should be allowed through the firewall for this purpose?

Accepted Answer

22. Secure file transfer between Linux servers typically uses SCP (Secure Copy) or SFTP (SSH File Transfer Protocol), both of which operate over SSH. SSH uses TCP port 22 by default, so allowing port 22 through the firewall enables encrypted authentication and data transfer. This is the correct choice because it provides confidentiality and integrity for the file transfer over the internet.

Answer

21

Answer

20

Answer

443

Question 13

A company deploys a new web server and wants to ensure that data transmitted between clients and the server is encrypted. The technician configures the server to use a certificate. Which protocol should be enabled on the server?

Accepted Answer

HTTPS. HTTPS (Hypertext Transfer Protocol Secure) encrypts data between clients and a web server using TLS/SSL. The certificate you configured on the server is used to establish a trusted, encrypted session, ensuring confidentiality and integrity of transmitted data.

Answer

HTTP

Answer

FTP

Answer

SSH

Question 14

A small office uses a network printer that is shared via a print server. Users report that print jobs are not reaching the printer. The technician pings the print server successfully but cannot connect to the printer's web interface using its IP address. Which protocol is most likely blocked or malfunctioning?

Accepted Answer

HTTP. The technician can ping the print server (ICMP success) but cannot connect to the printer's web interface via its IP address. The web interface uses HTTP (port 80) or HTTPS (port 443). Since ICMP is working but HTTP is not, the most likely issue is that HTTP traffic is being blocked by a firewall or the HTTP service on the printer is malfunctioning. This directly points to HTTP as the blocked or malfunctioning protocol.

Answer

TCP

Answer

UDP

Answer

SNMP

Question 15

A user reports that they can receive emails but cannot send any. The email client is configured with SMTP on port 25. The IT team confirms that port 25 is blocked by the ISP. Which alternative port should be used for SMTP submission?

Accepted Answer

Port 587. Port 587 is the standard SMTP submission port defined in RFC 6409 for email clients to send outgoing mail. Unlike port 25, which is used for SMTP relay between mail servers and is often blocked by ISPs to prevent spam, port 587 is specifically designated for client-to-server submission and typically supports STARTTLS encryption. Using port 587 bypasses the ISP's block on port 25 while adhering to modern email security practices.

Answer

Port 110

Answer

Port 143

Answer

Port 993

Question 16

A technician is configuring a new web server that must support both standard and encrypted web traffic. Which two ports should be opened in the firewall?

Accepted Answer

Port 80 and 443. Standard web traffic uses HTTP on port 80, while encrypted web traffic uses HTTPS on port 443. Opening these two ports in the firewall allows the web server to serve both unencrypted and TLS/SSL-encrypted content to clients.

Answer

Port 22 and 21

Answer

Port 3389 and 5900

Answer

Port 53 and 123

Question 17

A technician is setting up a network printer that supports both standard and secure printing. Which port should be configured for secure IPP printing?

Accepted Answer

Port 631. Secure IPP (Internet Printing Protocol) uses HTTPS to encrypt print jobs and communications. Port 631 is the standard port for IPP, and when secured with TLS/SSL, it still uses port 631 but over HTTPS. This is defined in RFC 3510, which specifies how IPP operates over TLS, making port 631 the correct choice for secure IPP printing.

Answer

Port 9100

Answer

Port 515

Answer

Port 443

Question 18

A client reports that their new 802.11ac laptop cannot connect to the office Wi-Fi, while older 802.11n devices work fine. The access point is a dual-band model. Which of the following is the MOST likely reason?

Accepted Answer

The 5 GHz radio on the access point is disabled.. The 802.11ac standard operates exclusively on the 5 GHz band. If the access point's 5 GHz radio is disabled, the laptop cannot see or connect to the Wi-Fi network, even though older 802.11n clients can still connect using the 2.4 GHz radio. This is the most likely cause because the laptop is new and otherwise functional, and the AP is dual-band but may have its 5 GHz radio turned off by default or misconfiguration.

Answer

The laptop's Wi-Fi antenna is damaged.

Answer

The laptop's drivers are not compatible with 802.11n.

Answer

The access point is set to 802.11b-only mode.

Question 19

A small office uses a legacy 2.4 GHz wireless b/g router. Employees report frequent disconnects and slow speeds, especially when the microwave is used in the break room. Which change would most directly reduce interference in this scenario?

Accepted Answer

Upgrade to a dual-band router and connect clients to the 5 GHz SSID.. The legacy 2.4 GHz router operates in the same frequency band as microwave ovens, which emit broadband interference around 2.45 GHz. Upgrading to a dual-band router and moving clients to the 5 GHz SSID directly avoids this interference because 5 GHz is not affected by microwave emissions, providing a cleaner RF environment and more available channels.

Answer

Enable WPA3 encryption on the router.

Answer

Increase the router's transmit power to maximum.

Answer

Change the 2.4 GHz channel from 6 to 11.

Question 20

A customer reports that their laptop frequently disconnects from the Wi-Fi in their home office, but works fine in other rooms. The office is located in a detached garage, and the wireless router is in the main house. Which wireless networking technology would best solve this issue without running cables?

Accepted Answer

Wireless mesh network. A wireless mesh network is the best solution because it extends Wi-Fi coverage to the detached garage without running cables. Mesh nodes communicate wirelessly with each other, creating a seamless network that overcomes the range and obstruction issues caused by the distance and building materials between the main house and garage.

Answer

5 GHz frequency band

Answer

Powerline networking adapters

Answer

802.11ac standard