CCNA And CCENT Practice Exam 2: Protocols and Port Numbers

Today’s CCNA and CCENT Practice Exam IS a drill — a port number drill, that is!   (This is good stuff to know for you Network+ candidates as well.)

Comments or questions?  Let me hear from you via Twitter @ccie12933.   I’m well worth a follow there, too.

Chris Bryant, CCIE #12933 on Twitter

Let’s get right to today’s questions.   Answers follow the questions (makes sense!), along with links to additional practice exams on the site.

Question 1:

What port does Syslog use?

A.  UDP 100

B.  UDP 514

C.  UDP 67

D.  TCP 89

E.   TCP 100

F.   TCP 514


Question 2:

What is the DHCP Server port?

A.    TCP 68

B.   UDP 68

C.   TCP  23

D.   TCP 24

E.   UDP 99

F.   UDP  67


Question 3:

FTP uses port TCP 21 for what particular purpose?

A.   Data transfer

B.   One-way authentication

C.   Building a control channel

D.    Two-way authentication

E.    Encryption

F.    Remote device identification


Question 4:

Which of the following two ports are associated with the Domain Name System?

A.  TCP 443

B.  UDP 443

C.   TCP 53

D.   UDP 53

E.   TCP 20

F.   TCP 21

G.  UDP 20

H.  UDP 21


Question 5:

What protocol uses port TCP 110?



C.    SSH

D.   Telnet

E.   POP3

F.    None of the above.

When you’re done with today’s test, head out to my CCNA Video Boot Camp on UdemyOver 89,000 students have already joined up, and it’s time for you to do the same.

Nowhere else will you find the clear and comprehensive explanations and labs, all created especially to prepare you for success on the CCENT and CCNA exams.

That sounds like bragging, and maybe it is.

89,000+ students are thrilled with the course.  You will be, too.  Join us today!

Chris Bryant's CCNA Video Boot Camp

And now… the answers!

Answer 1:  “B”.   Syslog uses port UDP 514.

Answer 2:   “F”.    The DHCP Server port is UDP 67; the DHCP Client port is UDP 68.   Keep ’em straight!

Answer 3:  “C”.   The File Transfer Protocol (FTP) uses port TCP 21 to build a control channel.

Answer 4:  “C” and “D”.   DNS uses both TCP and UDP 53.

Answer 5:   The Post Office Protocol 3 (POP3) uses TCP 110.

That’s it for today’s exam!   Visit my CCNA and CCENT Practice Exam page often — I post new exams there at least six times a week — and check out these other exams while you’re here!

Thanks for visiting — Chris B.

CCNA Practice Exam:  Handling Frames

CCNA Practice Exam:  Where IS That?

CCNA Practice Exam:  Access Lists

Chris Bryant’s CCNA Video Boot Camp on Udemy

Chris Bryant's CCNA Video Boot Camp