Which of the following protocols permits users to enter a user-friendly computer name into the
Windows browser and to map network drives and view shared folders?

A.
RADIUS

B.
NetBEUI

C.
VoIP

D.
ARP

Explanation:

NetBIOS Extended User Interface (NetBEUI) is a Microsoft proprietary protocol. NetBEUI is
usually used in single LANs comprising one to two hundred clients. It is a non-routable protocol.
NetBEUI was developed by IBM for its LAN Manager product and has been adopted by Microsoft
for its Windows NT, LAN Manager, and Windows for Workgroups products. It permits users to
enter a user-friendly computer name into the Windows browser and to map network drives and
view shared folders.
Answer option C is incorrect. Voice over Internet Protocol (VoIP) is a general term for a family of
transmission technologies for delivery of voice communications over IP networks such as the
Internet or other packet-switched networks. Other terms frequently encountered and synonymous
with VoIP are IP telephony, Internet telephony, Voice over Broadband (VoBB), broadband
telephony, and broadband phone.
VoIP systems employ session control protocols to control the set-up and tear-down of calls as well
as audio codecs that encode speech, allowing transmission over an IP network as digital audio via
an audio stream.
Answer option A is incorrect. RADIUS is a client/server protocol that runs in the application layer,
using UDP as transport. The Remote Access Server, the Virtual Private Network server, the
Network switch with port-based authentication, and the Network Access Server are all gateways
that control access to the network, and all have a RADIUS client component that communicates
with the RADIUS server. The RADIUS server is usually a background process running on a UNIX
or Windows NT machine.
RADIUS serves three functions:
To authenticate users or devices before granting them access to a network
To authorize those users or devices for certain network services To account for usage of those
services
Answer option D is incorrect. Address Resolution Protocol (ARP) is a computer networking
protocol used to determine a network host’s Link Layer or hardware address when only its Internet
Layer (IP) or Network Layer address is known. This function is critical in local area networking as
well as for routing internetworking traffic across gateways (routers) based on IP addresses when

the next-hop router must be determined.