A switch is distinct from a ___________in that it only forwards the frames to the ports involved in the communication rather than all ports connected
Repeater Router Hub Bridge
.
Computer networking is sometimes considered a sub-discipline of:
Electrical engineering
Telecommunications
Computer science
All of them are true
.
_______ is a piece of computer hardware designed to allow computers to physically access a networking medium
Interface cards (NICs)
Hubs
Switch
Bridge.
A ________ is an internetworking device that forwards packets between networks by processing information found in the datagram or packet:
Switch
Repeater Router
Bridge.
?Computer networks can be classified in:
Wired technologies and Wireless technologies
Wired protocols and Wireless protocols
Only Wired technologies
Only Wireless technologies
.
Routers work on:
Layer 2 of the OSI Model
Layer 3 of the OSI Model
Layer 4 of the OSI Model
Layer 5 of the OSI Model
.
Synchronous Optical NETworking (SONET) and Synchronous Digital Hierarchy (SDH) are standardized multiplexing protocols that transfer multiple digital bit streams over optical fiber using:
Lasers
Waves
Bits Packages.
Switches work on:
Layer 2 of the OSI Model
Layer 3 of the OSI Model
Layer 4 of the OSI Model
Layer 5 of the OSI Model
.
Which of these is NOT a communication media:
Electrical cable
Radio waves
Infrared
Crosstalk
.
Networks may be classified according to a wide variety of characteristics such as:
The medium used to transport the data
Communications protocol used
Scale, topology, and organizational scope
All of them are true
.
Ethernet MAC addresses are composed of
Five octets
Six octets
Seven octets
Eight octets
.
Communications _______ define the rules and data formats for exchanging information in a computer network.
Technologies
Protocols
Media
Web.
VPN is used to:
Storage data
Secure communications through the public Internet
Connect the computers with wireless technology
Connect just two computers
.
Terrestrial microwave is a
Wired technology
Wireless technology
Exotic technology
All of them are false
.
WAN is bigger than
MAN
CAN WAN
All of them are true.
.
Bridges ___________ to all ports except the port on which it was received.
Broadcast
Forecast Crosstalk
Repeat.
Which wired technology is faster?
Twisted pair
Coaxial cable
ITU-T G
Optical fiber
.
When all nodes are connected to a special central node is called:
Start network
Bus network
Ring network
Mesh network
.
To make a network cable you have to put the wires in the following order, from left to right:
White orange, orange, white green, blue, white blue, green, brown, white brown
White orange, orange, white green, blue, white blue, green, white brown, brown
White orange, orange, white green, white blue, blue, green, white brown, brown
Orange, white orange, white green, blue, white blue, green, white brown, brown
.
The reach of a PAN typically extends to:
1 meter
10 meters
100 meters
1000 meters
.
Network Card provides a low-level addressing system through the use of:
MAC LAN
HUB HAN
.
Which of these devices is NOT a network hardware component:
Interface cards (NICs)
Hubs,
USBs Bridges
.
Interplanetary radio wave is a
Wired technology
Wireless technology
Exotic technology
All of them are false
.
________ typically rejects access requests from unsafe sources while allowing actions from recognized ones
Switch
Repeater
Router Firewall.
Network programming is basically:
Process programming.
Socket programming.
Range programming
Virtual programming.
.
A Bridge can be:
Local
Wireless
Remote
All of them are true
.
A ________ is an electronic device that receives a signal, cleans it of unnecessary noise, regenerates it, and retransmits it at a higher power level, or to the other side of an obstruction, so that the signal can cover longer distances without degradation.
Switch
Repeater
Router Bridge
.
In most twisted pair Ethernet configurations, repeaters are required for cable that runs longer than :
10 meters.
50 meters.
100 meters.
150 meters.
.
__________ is a family of connectionless protocols used in LANs
RJ45
Infrared
Ethernet Internet.
WLAN means
Wide LAN
Wireless LAN
World LAN
Web LAN
.
|
