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TMG is a computer programming language developed in the early 1970s by a team of researchers at the University of California, Berkeley. It was designed as a successor to the earlier BCPL language, and was intended to be a more portable and efficient language for writing operating systems and other system software. TMG was used to develop the Berkeley Software Distribution (BSD) operating system, and it also influenced the design of the C programming language. References: - [Wikipedia article on TMG](https://en.wikipedia.org/wiki/TMG_(programming_language)) - [History of the TMG programming language](https://www.cs.berkeley.edu/~bshankar/tmg/history.html)

Ask the right questions secure the right TMG talent among an increasingly shrinking pool of talent.

First 20 minutes

General TMG app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in TMG application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

What is your experience with TMG development?

I have over five years of experience in TMG development, working on various projects ranging from small to large scale.

How would you debug a TMG application?

I would use the debugging tools provided by the development environment, such as breakpoints, watch variables, and step through execution.

What are the key features of TMG?

TMG provides features such as multi-factor authentication, integrated intrusion detection/prevention, and detailed traffic logging.

Describe the difference between TMG and a traditional firewall.

Unlike traditional firewalls, TMG is an application-layer firewall that provides deep packet inspection, URL filtering, and VPN support.

How would you handle a security breach in a TMG application?

I would first isolate the affected system, then analyze the breach to understand its nature and extent. After that, I would apply the necessary fixes and measures to prevent future breaches.

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What you’re looking for early on

Has the candidate demonstrated an in-depth understanding of TMG development?

Is the candidate able to communicate clearly and effectively?

Does the candidate show a problem-solving attitude?

Did the candidate express a willingness to keep learning and improving?

Next 20 minutes

Specific TMG development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

What are the best practices for TMG configuration?

Best practices include minimizing the attack surface, using strong authentication and encryption, and regularly updating and patching the system.

Describe the difference between TMG and UAG.

While both are security solutions from Microsoft, TMG is more focused on network-level protection while UAG provides secure remote access to applications.

How would you optimize a TMG application for performance?

I would use techniques such as caching, load balancing, and efficient coding practices to optimize the performance of a TMG application.

What are the limitations of TMG?

Limitations include lack of support for newer protocols and technologies, and the fact that Microsoft has discontinued the product.

Describe the difference between TMG Standard Edition and Enterprise Edition.

Enterprise Edition provides additional features such as array management, load balancing, and cache array routing protocol support.

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At this point, a skilled TMG engineer should demonstrate strong problem-solving abilities, proficiency in TMG programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with TMG.

What does this simple TMG code do?
RULE: R1
ID:'Hello, World!'
END
This code defines a rule named R1 in TMG that simply outputs the string 'Hello, World!' when the rule is invoked.
What will be the output of this TMG code?
RULE: R2
ID:'TMG'
$$
ID:'Developer'
END
This code will output the string 'TMG Developer'. The $$ operator in TMG is used to concatenate strings.
What does this TMG code do?
RULE: R3
SET: arr[1] = 'TMG'
SET: arr[2] = 'Developer'
ID: arr[1]
$$
ID: arr[2]
END
This code creates an array named arr, assigns the string 'TMG' to the first element and 'Developer' to the second element. It then outputs the concatenated string 'TMG Developer'.
What does this TMG code do?
RULE: R4
THREAD: t1 = R1()
THREAD: t2 = R2()
WAIT: t1, t2
END
This code creates two threads t1 and t2 that execute rules R1 and R2 concurrently. It then waits for both threads to complete before continuing.

Wrap-up questions

Final candidate for TMG Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle TMG application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

How would you migrate from TMG to a different security solution?

I would first analyze the requirements and features of the new solution, then plan and execute the migration while ensuring minimal downtime and impact on users.

What are the alternatives to TMG?

Alternatives include other firewall and security solutions such as pfSense, Fortinet, and Cisco ASA.

Describe the difference between TMG and ISA Server.

TMG is the successor to ISA Server and provides additional features such as integrated intrusion detection/prevention and HTTPS inspection.

TMG application related

Product Perfect's TMG development capabilities

Beyond hiring for your TMG engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in TMG projects, and can engage in multiple capacities.

TMG Consultive assessments

TMG Application Conversion Assessment TMG Application Integration Assessment TMG Data & Database Integration Assessment

Custom TMG development projects

Custom TMG App Conversion TMG Custom App Development Process App UI Design for TMG Facelifts

Hiring guide for TMG Engineers

TMG Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

What you’re looking to see on the TMG engineer at this point.

TMG Consultive assessments

Custom TMG development projects