keithnoguchi

What to Expect and Tips

• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.

Systems

More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).

Design/Architecture 

Interview is all about taking an ambiguous question of how you might build a system and letting

keithnoguchi

(ansible)[ansible-ios]$ ansible -m ios_facts -a "host=ios01 username=cisco password=cisco authorize=true gather_subset=all" ios01
ios01 | SUCCESS => {
    "ansible_facts": {
        "ansible_net_all_ipv4_addresses": [
            "172.26.4.30"
        ],
        "ansible_net_all_ipv6_addresses": [],
        "ansible_net_config": "Building configuration...\n\nCurrent configuration : 3205 bytes\n!\n! Last configuration change at 20:15:33 UTC Tue May 24 2016 by ********\n!\nversion 15.6\nservice timestamps debug datetime msec\nservice timestamps log datetime msec\nno service password-encryption\n!\nhostname veos01\n!\nboot-start-marker\nboot-end-marker\n!\n!\nvrf definition Mgmt-intf\n !\n address-family ipv4\n exit-address-family\n !\n address-family ipv6\n exit-address-family\n!\nno logging buffered\nlogging console informational\nenable password ********\n!\nno aaa new-model\nethernet lmi ce\n!\n!\n!\nmmi polling-interval 60\nno mmi auto-configure\nno mmi pvc\nmmi snmp-timeout 180\n!\n!\n!\n!\n!\n!\n!\n!\n!\n

keithnoguchi

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