Network & Telecom Interview Questions and Answers in 2025 (100+ Q&A)

RF Engineering Software Developer/ Programmer

Ques:- What is the job of the amplifier?

Asked In :- Lotus Wireless Technologies, Collins Aerospace, airtel, ibwave solutions inc., aura semiconductor,

Right Answer:
The job of the amplifier is to increase the amplitude of a signal, making it stronger without significantly altering its original form.

Internet Protocols Tech Architect

Ques:- What are the two types of OLTP?

Asked In :-

Internet Protocols Software Developer/ Programmer

Ques:- How do I update my Domain Name Servers (DNS)?

Asked In :-

Internet Protocols Web Designer

Ques:- What is SIP? how does it work? what are the alternatives if any? current and future practice and application standards? references(books,urls,rfcs etc)

Asked In :- SEW, SoftNice, Savantis, Kony India, linkites infotech pvt ltd,

Internet Protocols System Administrator

Ques:- What is fragmentation of a packet ?

Asked In :- Tpad,

Database Architect/ Designer Internet Protocols

Ques:- Should we deploy IPSEC-based security or certificate-based security?

Asked In :- Udaan, Qualesce,

Internet Protocols Project Leader/ Project Manager

Ques:- How do you use RSA for both authentication and secrecy?

Asked In :-

Internet Protocols System Security Engineer

Ques:- Tell me something about Web.

Asked In :- aspiro,

Internet Protocols System Administrator

Ques:- How do I upload my site online?

Asked In :- Braves Technologies, skydio,

Internet Protocols System Administrator

Ques:- I already have a domain with a website. How can I get my domain name to point to my website?

Asked In :- Naico Information Technology Services,

Database Architect/ Designer Internet Protocols

Ques:- Who Can Benefit From IP Masquerade?

Asked In :- Data Marshall, five9,

Internet Protocols Software Developer/ Programmer

Ques:- What is a URL?

Asked In :-

Internet Protocols Software Developer/ Programmer

Ques:- Difference between the communication and transmission.

Asked In :-

RF Engineering Rf Installation & Administration Engineer

Ques:- What filter types are there?

Asked In :- syrma technology,

Right Answer:
The main filter types are:

1. Low-pass filter
2. High-pass filter
3. Band-pass filter
4. Band-stop (notch) filter
5. All-pass filter

Internet Protocols System Integrator

Ques:- Name three network tools used to determine where a network connectivity is lost between two sites A&B.

Asked In :-

RF Engineering System Engineer

Ques:- What are saw filters used for?

Asked In :- Astra Microwave Products, Lotus Wireless Technologies,

Right Answer:
SAW filters are used to filter specific frequencies in radio frequency (RF) applications, allowing desired signals to pass while attenuating unwanted signals.

Internet Protocols Software Developer/ Programmer

Ques:- Is the CDA necessary to protect children?

Asked In :-

Internet Protocols System Security Engineer

Ques:- Is it possible for an IP datagram to be duplicated?

Asked In :- mediatek,

Database Architect/ Designer Internet Protocols

Ques:- What is .CO.NR domain name? Who assigned it? What does it mean?

Asked In :- neudesic, planview, paytronix systems,

Hardware Design Tech Architect

Ques:- Draw a Transmission Gate-based D-Latch?

Asked In :- DIGICOMM Semiconductor, Kaynes Technology Inc, Medha Servo Drives, American Megatrends Inc, Mistral Solutions, Open-Silicon, Skyworks Solutions, E-T-A, valeo, western digital,

Right Answer:
A Transmission Gate-based D-Latch can be represented as follows:

```
D ----|>o----|>o---- Q
| |
| |
CLK ---| |--- CLK
| |
D ----|>o----|>o---- Q'
```

In this diagram:
- The D input is connected to the gates of two transmission gates.
- The CLK signal controls the transmission gates.
- Q is the output that holds the value of D when CLK is high.
- Q' is the complementary output.

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