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An SLO is the Service Level Objective that is BASICALLY an essential element of the SLA (Service Level Agreement) among the service provider and the customer which is agreed upon at the time of measuring the performances of the service providers and they are BUILT in the way that avoids the disputes among two parties.

SLO can be a particular measurable trait of SLA like accessibility, throughput, recurrence, reaction time, or quality. These SLOs together characterize the NORMAL service among the provider and the client while differing relying upon the service’s earnestness, resources, and FINANCIAL plan. SLOs give a quantitative means to characterize the degree of service a client can anticipate from a provider

Below listed are the best SRE tools for each stage of DEVOPS:

Planning: JIRA, Pivotal TRACKER, and other famous task management tools.

Creation: GitHub Verification: CD/CI tools such as Jenkins and CircleCI

Packaging: Container arrangement services such as Mesosphere or Kubernetes

Configuration: Tools like ANSIBLE and Terraform

DHCP is abbreviated as Dynamic Host Configuration Protocol. It is known as the protocol for network management that is USED on IP networks by which a DHCP server effectively assigns the IP address and other configurations on the network parameters to every individual device on the network; so that they can easily COMMUNICATE with the other IP networks.

The DHCP server is being used for:

• Diminishing the requirement for a network administration or a client to physically assign IP addresses to all the network devices.
• Requesting the Internet Protocol (IP) addresses and the parameters of NETWORKING from the ISP (Internet Service Provider).

For securing the docker container, one must follow the below guidelines:

• Third-party containers should be chosen carefully.
• Enables the docker content trust.
• One should NEED to set the resource limit for their containers.
• Third-party security tools should be considered.
• Docker bench security should be used.

The kill COMMAND in Linux is the command used for sending the signals to the specified processes or process the groups.

Below LISTED are the kill commands:

• Killall: This command is being used to kill all the processes with a particular name.
• Pkill: This command is very much SIMILAR to the Killall command, the only difference is it KILLS processes with partial names.
• Xkill: This command allows the USERS to kill the command simply by clicking on the window.

Below are the activities that can REDUCE the toil:

• Creating internal automation
• Creating external automation
• Enhance the services so that they do not need maintenance interference.

TCP is the Transmission Control Protocol which is one of the important protocols of the Internet protocol SUITE. It is a communication standard that is used to enable the APPLICATION programs and computing devices for EXCHANGING messages over the network.

TCP connections states are listed below.

• LISTEN
• SYNC-SENT
• SYNC-RECEIVED
• ESTABLISHED

Error budgets are basically used to define the maximum AMOUNT of TIME that a technical system can fail WITHOUT any contractual consequences.

Error budgets are used to strengthen the teams to reduce the real INCIDENTS and increases innovation by taking more risks WITHIN the acceptable limits.

With this question, the interviewer is interested to know about your will and knowledge about the role. The perfect answer to this question can be as below.

I have experienced in the same role with a DEEP understanding of:

• The principles behind SRE.
• Relationship of SRE with DEVOPS among other popular frameworks.
• Experienced with SLI’s (Service Level Indicators)
• Practical knowledge in ELIMINATING toil.
• Error BUDGETS and the policies ASSOCIATED with them.
• SRE tools, techniques of performing automation, and the importance of security.

Hence, with all this information and knowledge I feel this is the perfect role for me.