Bell Teleservices Interview Questions and Answers for Experienced

Q1. Explain about osi layers
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Q2. Tcp vs udp
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Q1. What are the data types in python?
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Python data types include integers, floats, strings, lists, tuples, dictionaries, and sets.
• Integers: whole numbers without decimal points, e.g. 5, -3

• Floats: numbers with decimal points, e.g. 3.14, -0.5

• Strings: sequences of characters enclosed in quotes, e.g. 'hello', '123'

• Lists: ordered collections of items, e.g. [1, 'apple', True]

• Tuples: ordered, immutable collections, e.g. (1, 'banana', False)

• Dictionaries: key-value ...read more
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Q2. What is inheritence in python and its types?
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Inheritance in Python allows a class to inherit attributes and methods from another class.
• Types of inheritance in Python include single inheritance, multiple inheritance, and multilevel inheritance.

• Single inheritance: a class inherits from only one base class.

• Multiple inheritance: a class inherits from multiple base classes.

• Multilevel inheritance: a class inherits from a derived class, which in turn inherits from anoth
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Q3. Difference between tuple, list, dictionaries and set.
Ans. 
Tuple is immutable, list is mutable, dictionaries are key-value pairs, and set is a collection of unique elements.
• Tuple: Immutable, ordered collection of elements. Example: (1, 2, 3)

• List: Mutable, ordered collection of elements. Example: [1, 2, 3]

• Dictionaries: Key-value pairs, unordered. Example: {'key1': 'value1', 'key2': 'value2'}

• Set: Collection of unique elements, unordered. Example: {1, 2, 3}
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Q4. Reverse a string without using slicing. Need to write it on paper.
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Q1. Basic questions about us.
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Q2. Given a string and asked to get the vowels in a string.
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Q1. What is STP and its working, Routing protocols like OSPF, BGP. Knowledge of TCP/UDP
Ans. 
STP is a network protocol that prevents loops in Ethernet networks. OSPF and BGP are routing protocols used to exchange routing information.
• STP (Spanning Tree Protocol) is used to prevent loops in Ethernet networks by creating a loop-free logical topology.

• STP works by electing a root bridge and calculating the shortest path to the root bridge for each network segment.

• OSPF (Open Shortest Path First) is an interior gatew...read more
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Q2. Knowledge of Cisco and Huawei Switches
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Q1. Switching and routing protocol
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Basic questions like positioning array , sorting

Test based on process we worked in previous company

Q1. Salary discussion
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Q1. Manager round they asking process related questions
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Q1. How you connect two data center located in different cities
Ans. 
Connect two data centers in different cities using dedicated leased lines or VPN tunnels.
• Use dedicated leased lines for high-speed, secure connection

• Implement VPN tunnels over the internet for cost-effective solution

• Consider using MPLS for reliable and efficient data transfer

• Utilize redundant connections for failover and high availability

• Implement encryption and security measures to protect data during transit
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Q1. Genral question answer
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Q1. Work experience, and skills question
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Q1. Profile related questions
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Q1. Experience in this type of job profile
Ans. 
I have over 5 years of experience as a Project Manager, leading cross-functional teams to successful project completion.
• Managed multiple projects simultaneously

• Developed project plans and timelines

• Identified and mitigated risks

• Communicated effectively with stakeholders

• Ensured project deliverables met quality standards
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