220-1101 Question 332
Single answerNetwork scan servicesA technician is setting up a new multifunction printer on a small office network. Users can print to the device by IP address, but the printer does not appear when they use the operating system's network scanner wizard to add a scanner. The printer's web interface shows that printing is enabled, but scan-to-computer discovery is not working. Which service should the technician verify is enabled on the multifunction printer so client devices can discover its scanning capability on the network?
- A
SMB/CIFS file sharing
- B
SNMP
- C
SMTP relay
- D
LDAP directory lookup
Show answer and explanation
Correct answer: B
Explanation
In a real-world A+ Core 1 scenario, a multifunction printer may support printing even when scan discovery is unavailable because printing and scanning often rely on different protocols and services. SNMP is commonly used by operating systems and vendor software to discover device capabilities, monitor status, and identify whether a printer also supports scanning. If SNMP is turned off on the device or blocked on the network, the printer may still accept print jobs via TCP/IP, but users may not be able to find or add its scanner functions through standard discovery tools. This aligns with common vendor guidance from printer manufacturers and with standard network management practices, where SNMP is used for device identification and capability polling. SMB, SMTP, and LDAP may all be involved in scan workflows, but they do not primarily provide scanner discovery to client systems.
- A. Incorrect.
SMB/CIFS file sharing is commonly used for scan-to-folder destinations after a scan has already been initiated, but it is not the primary discovery service that allows client systems to detect that a network device offers scanning functions. A technician might choose this because SMB is often associated with network scanning workflows, especially when configuring scan-to-share features.
- B. Correct.
SNMP is correct because many operating systems and printer/scanner management utilities use Simple Network Management Protocol to query multifunction devices for capabilities and status, including whether scan services are available. If SNMP is disabled, the device may still print by IP because printing protocols can function independently, but scanner discovery and management features may fail.
- C. Incorrect.
SMTP relay is used for scan-to-email workflows, where the device sends scanned documents through a mail server. It does not advertise the scanner to client devices for discovery in a network scanner wizard. This is a plausible distractor because email is a common destination for scanned documents.
- D. Incorrect.
LDAP directory lookup is used by some enterprise multifunction devices to access directory services, such as looking up user email addresses for scan-to-email or contact information. It does not typically provide scanner discovery to client computers. Someone might select this option if they confuse authentication/address-book services with device discovery.