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IBM
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I applied via Approached by Company and was interviewed in Apr 2022. There were 4 interview rounds.
The interview was very good as they asked me my experiences(good & bad) from the day I am professional. How to handle the situations when a senior person makes a mistake. What are the ways of learning that you prefer.
I have worked with a variety of tools as a Network Engineer.
Cisco Packet Tracer
Wireshark
SolarWinds Network Performance Monitor
Nmap
GNS3
Ping
Traceroute
I have worked on a variety of technologies as a Network Engineer.
Cisco networking equipment
Routing and switching protocols (e.g. OSPF, BGP)
Firewalls and security appliances (e.g. Cisco ASA, Palo Alto)
Network monitoring and management tools (e.g. SolarWinds, Wireshark)
Virtualization technologies (e.g. VMware, Hyper-V)
Load balancers (e.g. F5, Citrix NetScaler)
Wireless networking (e.g. Cisco Meraki, Aruba)
Network troubles
I applied via Recruitment Consulltant and was interviewed before Jun 2022. There were 2 interview rounds.
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I applied via LinkedIn and was interviewed before May 2023. There was 1 interview round.
IBM interview questions for designations
I applied via Naukri.com and was interviewed in Aug 2021. There were 3 interview rounds.
There are several types of networks, including LAN, WAN, MAN, WLAN, and PAN.
Local Area Network (LAN) is a network that covers a small area, such as an office or a building.
Wide Area Network (WAN) is a network that covers a large geographical area, such as multiple cities or countries.
Metropolitan Area Network (MAN) is a network that covers a larger area than a LAN but smaller than a WAN, typically within a city.
Wireles...
The range of private IP addresses is defined by three blocks: 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255.
Private IP addresses are used within private networks and are not routable on the internet.
The three blocks of private IP addresses are reserved for use in local area networks (LANs) and are not unique globally.
Private IP addresses allow organizations to have multipl...
A /29 subnet has 6 usable host addresses.
A /29 subnet has a subnet mask of 255.255.255.248.
The subnet mask leaves 3 bits for host addresses.
2^3 = 8, but 2 addresses are reserved for network and broadcast.
Therefore, a /29 subnet has 6 usable host addresses.
MPLS (Multiprotocol Label Switching) is a protocol used in telecommunications networks to efficiently route data packets.
MPLS is a layer 2.5 protocol that operates between traditional layer 2 (Data Link Layer) and layer 3 (Network Layer) protocols.
It uses labels to identify and forward data packets, improving network performance and scalability.
MPLS can be used to create virtual private networks (VPNs) and prioritize t...
BGP (Border Gateway Protocol) is a routing protocol used in internet networks. It provides scalability, redundancy, and policy control.
BGP is used to exchange routing information between different autonomous systems (AS)
It allows for efficient routing decisions based on policies and network conditions
BGP states represent the different stages of establishing and maintaining BGP peering sessions
Examples of BGP states inc...
OSPF LSA types include Router LSA, Network LSA, Summary LSA, ASBR Summary LSA, AS External LSA, and NSSA External LSA.
Router LSA describes the state of the router and its interfaces within an area.
Network LSA describes the state of the network segment and its attached routers.
Summary LSA summarizes routes from one area to another.
ASBR Summary LSA summarizes routes to an Autonomous System Boundary Router (ASBR).
AS Exter...
VTP stands for VLAN Trunking Protocol. It is a Cisco proprietary protocol used to manage VLAN configurations across a network.
VTP allows for centralized management of VLANs in a network.
It enables the creation, deletion, and renaming of VLANs on a switch and automatically propagates these changes to other switches in the network.
VTP operates in three modes: server, client, and transparent.
Server mode allows VLAN config...
HSRP stands for Hot Standby Router Protocol. It is a Cisco proprietary protocol used to provide redundancy for IP networks.
HSRP is used to create a virtual IP address that can be shared by multiple routers in a network.
It allows for automatic failover in case the primary router fails.
HSRP routers elect an active router and standby routers, with the active router handling traffic while the standby routers are ready to t...
Get interview-ready with Top IBM Interview Questions
DNS is a system that translates domain names into IP addresses. DHCP is a protocol for assigning IP addresses. IP address is a unique identifier for devices. RJ-45 is a type of connector used for Ethernet cables.
DNS translates domain names (e.g., www.example.com) into IP addresses (e.g., 192.168.1.1).
DHCP is a protocol that automatically assigns IP addresses to devices on a network.
An IP address is a numerical label as...
The show interface command displays the status and statistics of a network interface.
Displays the interface type, member, module, and number
Shows the current status of the interface (up or down)
Displays the number of packets transmitted and received
Shows the number of errors and discards
Displays the speed and duplex settings of the interface
I was interviewed before Sep 2020.
Round duration - 140 minutes
Round difficulty - Medium
Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...
Given two numbers represented as arrays, calculate their sum and return the result as an array.
Iterate through the arrays from right to left, adding digits and carrying over if necessary
Handle cases where one array is longer than the other by considering the remaining digits
Ensure the final sum array does not have any leading zeros
Round duration - 20 minutes
Round difficulty - Easy
The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.
Round duration - 8 minutes
Round difficulty - Easy
This round was conducted right after finishing and clearing the technical round at the same place and on the same day.
Tip 1 : Practice atleast 2-3 Coding problems daily so your logic building becomes stronger.
Tip 2 : Exercise problems based on OOPS concepts and others too.
Tip 3 : If you can have your own project built, then it's the major point and will act as a plus point.
Tip 1 : Your resume should be in standard form, short and simple will be more effective.
Tip 2 : Whatever you have learned, you need to mention it in your resume as that will be your primary source of selection and having project on your resume is important.
I applied via Campus Placement and was interviewed before Jan 2020. There were 4 interview rounds.
I applied via Campus Placement and was interviewed in Jul 2020. There were 3 interview rounds.
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