This is the Online Practice Quiz in Domain Name System part 3 from the book, Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you test your knowledge and skill before taking the Board Exam.
Continue Part III of the Online Practice Quiz
Quiz in Domain Name System
Question 21. A _________ is a subtree of the domain name space.
Question 22. In a _________name space, each name is made of several parts. Question 23. A _______ is a server whose zone consists of the whole tree. Question 24. If a label is not terminated by a null string, it is called a __________. Question 25. A host with the domain name pit.arc.nasa.gov. is on the _______ level of the DNS hierarchical tree. (The root is level one.) Question 26. When the secondary downloads information from the primary, it is called ______ transfer. Question 27. Each node in the tree has a _______, which is a string with a maximum of ___ characters.