Ciena Software Engineer Interview Questions and Answers

I am a software engineer with experience in developing web applications and mobile apps.

• I have a degree in Computer Science

• I am proficient in programming languages such as Java, Python, and JavaScript

• I have experience working with frameworks such as React and Angular

• I have developed several web applications and mobile apps, including a social media platform and a fitness tracking app

OSI network model has 7 layers. Layer 2 is Data Link layer and Layer 3 is Network layer.

• Layer 2 protocols include Ethernet, Wi-Fi, and PPP

• Layer 3 protocols include IP, ICMP, and ARP

• Data Link layer provides error-free transmission over physical layer

• Network layer provides logical addressing and routing of data packets

Layer 2 devices operate at the data link layer, while Layer 3 devices operate at the network layer.

• Layer 2 devices include switches and bridges.

• Layer 3 devices include routers and layer 3 switches.

• Layer 2 devices forward frames based on MAC addresses.

• Layer 3 devices forward packets based on IP addresses.

Routers direct traffic between networks while switches connect devices within a network.

• Routers use IP addresses to direct traffic between networks

• Routers can prioritize traffic based on Quality of Service (QoS)

• Switches use MAC addresses to connect devices within a network

• Switches can create virtual LANs (VLANs) to segment a network

• Example of a router: Cisco ISR 4000 series

• Example of a switch: Cisco Catalyst 2960 serie

OSI has 7 layers while TCP/IP has 4 layers.

• OSI model is theoretical while TCP/IP is practical

• OSI has a dedicated session layer while TCP/IP does not

• TCP/IP combines the presentation and session layers into one

• OSI is more complex and rarely used in practice

• TCP/IP is the standard for internet communication

Program to reverse a string in any language

• Declare a string variable

• Loop through the string in reverse order

• Append each character to a new string variable

• Return the new string variable

C code for printing Fibonacci Series upto n elements

• Declare three variables to store the current, previous and next numbers in the series

• Initialize the previous and current variables to 0 and 1 respectively

• Use a loop to print the next number in the series by adding the previous two numbers

• Loop should run n times to print n elements in the series

I have the technical skills, experience, and passion to deliver high-quality software solutions.

• I have a strong background in programming languages such as Java, Python, and C++.

• I have experience working on complex software projects and collaborating with cross-functional teams.

• I am passionate about staying up-to-date with the latest technologies and trends in software development.

• I am a quick learner and have a strong...read more

Ericsson is a global leader in telecommunications technology with a strong focus on innovation and career development.

• Global leader in telecommunications technology

• Strong focus on innovation

• Opportunities for career development

To make the red fishes 98%, 50 fishes have to be removed from the aquarium.

• Calculate 1% of 200 fishes, which is 2 fishes.

• To make the red fishes 98%, subtract 1% (2 fishes) from 99% (198 fishes).

• To find the number of fishes to be removed, divide the difference by 1% (2 fishes).

• Therefore, 50 fishes have to be removed to make the red fishes 98%.