Cracking the Coding Interview, 4 Edition - 150 Programming Interview Questions and Solutions

Chapter 17 | Networking
How to Approach
While the big software houses probably won’t ask you many detailed networking questions
in general, some interviewers will attempt to assess your understanding of networking as far
as it relates to software and system design. Thus, you should have an understanding of http
post and get requests, tcp, etc.
For a more networking based company (Qualcomm, CISCO, etc), we recommend a more
thorough understanding. A good way to study is to read the material below, and delve further
into it on Wikipedia. When Wikipedia discusses a concept that you are unfamiliar with,
click on the concept to read more.
OSI 7 Layer Model
Networking architecture can be divided into seven layers. Each layer provides services to
the layer above it and receives services from the layer below it. The seven layers, from top
to bottom, are:
OSI 7 Layer Model
Level 7
Level 6
Level 5
Level 4
Level 3
Level 2
Level 1
Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
For a networking focused interview, we suggest reviewing and understanding these concepts
and their implications in detail.
8 3
Cracking the Coding Interview | Knowledge Based