GKwizard

What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?

A. 4

B. 2

C. 6

D. 3

Answer: Option D

Discussion

1

Which device assigns IP addresses to devices in a network?

A. Router

B. Switch

C. Firewall

D. Hub

2

What does DNS stand for in networking?

A. Digital Name Server

B. Domain Number System

C. Domain Name System

D. Distributed Name Service

3

Which protocol is used for secure web browsing?

A. HTTP

B. FTP

C. HTTPS

D. SMTP

4

What does a switch operate at in the OSI model?

A. Layer 1

B. Layer 2

C. Layer 3

D. Layer 4

5

Which topology uses a central hub or switch?

A. Bus

B. Star

C. Ring

D. Mesh