CBET Healthcare IT and Networking 5 — Questions and Answers
Question 1: A BIOMED technician is configuring a wireless patient monitoring system. Which Wi-Fi frequency band typically provides better range but is more susceptible to interference in a hospital environment?
- 5 GHz
- 2.4 GHz (Correct answer)
- 60 GHz
- 900 MHz
Correct answer: 2.4 GHz
The 2.4 GHz band has greater range but experiences more interference from devices like microwaves and cordless phones that share that spectrum.
Question 2: What does the HL7 FHIR standard primarily define in the context of healthcare IT interoperability?
- Physical cable specifications for medical networks
- A RESTful API framework for exchanging healthcare data between systems (Correct answer)
- Encryption standards for medical device firmware
- Database schema for EHR storage
Correct answer: A RESTful API framework for exchanging healthcare data between systems
HL7 FHIR (Fast Healthcare Interoperability Resources) defines a RESTful API and data resource formats to enable standardized exchange of health information.
Question 3: A biomedical technician needs to verify that a medical device can communicate with a remote server. Which command-line tool tests basic IP reachability?
- nslookup
- netstat
- ping (Correct answer)
- tracert
Correct answer: ping
The ping command sends ICMP echo requests to test basic IP-level connectivity between a device and a target host.
Question 4: Which network topology is most commonly used in modern hospital environments because it centralizes management and simplifies troubleshooting?
- Ring topology
- Bus topology
- Star topology (Correct answer)
- Mesh topology
Correct answer: Star topology
Star topology connects all devices to a central switch, making it easy to isolate faults and manage network devices in clinical settings.
Question 5: A hospital implements multi-factor authentication (MFA) for EHR access. Which combination correctly represents MFA?
- Username + password
- Password + security question
- Smart card (something you have) + PIN (something you know) (Correct answer)
- Fingerprint + retina scan
Correct answer: Smart card (something you have) + PIN (something you know)
MFA requires two or more different authentication factor categories — a smart card is 'something you have' and a PIN is 'something you know.'
Question 6: A networked medical device's FDA 510(k) clearance documentation specifies it must not be connected to an open internet-facing port. Which network control directly enforces this requirement?
- SNMP community strings
- Firewall ACL (Access Control List) rules blocking inbound internet traffic to the device (Correct answer)
- DHCP reservation
- NTP synchronization
Correct answer: Firewall ACL (Access Control List) rules blocking inbound internet traffic to the device
Firewall ACL rules block unauthorized inbound traffic from the internet to specific device IPs, enforcing network isolation requirements.
Question 7: When a BIOMED technician replaces a networked ECG machine and the new device cannot reach the DICOM server, which service should be checked first to confirm the device received correct network configuration automatically?
- DNS
- DHCP (Correct answer)
- FTP
- LDAP
Correct answer: DHCP
DHCP automatically assigns IP address, subnet mask, gateway, and DNS server to network devices; a misconfiguration here prevents any network communication.
CBET Healthcare IT and Networking 5
A BIOMED technician is configuring a wireless patient monitoring system.
Which Wi-Fi frequency band typically provides better range but is more susceptible to interference in a hospital environment?