Set 14 – Johns Hopkins Computer Support Assistant Interview Preparation

Interview preparation for the Johns Hopkins University Computer Support Assistant position (Requisition 122737). Includes 20 questions and interview-ready answers covering networking fundamentals, wireless troubleshooting, Ekahau, equipment replacement, customer service, teamwork, and transitioning from healthcare to IT support.

Tell me about yourself.

I have 17 years of healthcare operations experience at Memorial Sloan Kettering, supporting clinical equipment and over 50 procedures daily. I earned the Google IT Support Professional Certificate and IBM SkillsBuild credentials, and practiced Active Directory, Group Policy, and networking in hands-on labs. I'm ready to apply these skills in IT support.

Why do you want to work at Johns Hopkins University?

Johns Hopkins combines healthcare, education, and technology. I'm interested in supporting reliable network services while learning wireless networking from experienced engineers. My healthcare background has taught me the importance of dependable equipment, teamwork, and communication.

Why are you transitioning from healthcare into IT?

I enjoyed troubleshooting equipment, solving problems, and helping clinical teams keep operations running. This motivated me to pursue IT training and independent technical labs. IT support allows me to combine my existing strengths with my growing technical skills.

Why should we hire you?

I bring 17 years of experience in high-pressure support, strong customer service, attention to detail, and IT fundamentals. I can follow procedures, document my work, collaborate with technical teams, and learn new technologies.

What is the difference between a router and a switch?

A switch connects devices within a local network and forwards frames using MAC addresses. A router connects different networks and forwards packets using IP addresses.

What is an IP address?

An IP address identifies a network interface and allows data to be routed across IP networks. I can use ipconfig to inspect a Windows device's IP configuration during troubleshooting.

What are DHCP and DNS?

DHCP automatically provides IP configuration, including addresses and gateways. DNS translates domain names into IP addresses. I would check DHCP for addressing failures and DNS for name-resolution problems.

What is a wireless access point?

A wireless access point, or AP, provides Wi-Fi connectivity to devices and connects them to a network. Enterprise access points are planned for appropriate coverage, capacity, and performance.

What is RF coverage and what causes interference?

RF coverage describes where wireless radio signals provide usable connectivity. Distance, walls, overlapping channels, neighboring networks, and other radio sources can reduce performance.

What is a wireless site survey, and have you used Ekahau?

A wireless site survey measures coverage, signal quality, and interference. Ekahau is used for Wi-Fi surveys and design. I have not used Ekahau professionally, but I understand wireless fundamentals and am eager to learn it under guidance.

A user cannot connect to Wi-Fi. What would you do?

I would determine whether one or multiple users are affected, verify Wi-Fi is enabled, check the SSID and signal strength, inspect IP configuration, and test connectivity. I would isolate the cause, follow approved procedures, document the findings, and verify the resolution.

What does a 169.254.x.x IP address indicate?

It often indicates that Windows assigned an automatic private IP address because DHCP did not provide one. I would check connectivity to the network, DHCP availability, and whether other devices are affected.

How would you troubleshoot slow wireless connectivity?

I would determine whether the issue affects one device or an entire area, check signal strength and interference, compare devices, run approved connectivity tests, and document the results before escalating infrastructure changes.

What would you do if a switch or access point stopped working?

I would check for known outages, inspect power and link indicators, verify authorized physical connections, document the impact, and escalate configuration or hardware changes beyond my permissions.

How would you assist with network equipment fleet replacement?

I would follow the deployment plan, inventory equipment, record asset identifiers and locations, prepare replacements, assist with installation under an engineer's direction, test connectivity, and document the results.

Have you worked directly with network engineers?

Not professionally yet. However, I have completed independent Windows Server and networking labs and collaborated with technical and clinical teams throughout my healthcare career. I am comfortable following instructions, asking questions, and learning.

Describe a time you worked under pressure.

At Memorial Sloan Kettering, I supported equipment readiness for more than 50 procedures daily. I prioritized urgent equipment needs, communicated with clinical teams, and stayed organized to support safe and efficient operations.

How do you handle a frustrated customer?

I listen without interrupting, acknowledge the concern, ask clear questions, explain the troubleshooting process in simple language, provide updates, and verify that the issue is resolved.

What do you do when you cannot solve a technical problem?

I gather symptoms, document troubleshooting steps, consult approved resources, and test safe solutions. If the issue exceeds my knowledge or authorization, I escalate with clear findings and learn from the resolution.

What questions would you ask the interviewer?

I would ask about the first 90 days, training for Ekahau and wireless surveys, how assistants work with network engineers, common wireless issues, and how success is measured.