Exam 2 Flashcards
Which is an advantage of networking?
Centralized data management
A _____ is necessary to make the connection between a local area network and the Internet?
router
Encryption on a wireless network is activated by enabling _______.
WPA
A(n) _______ is a network device with software that manages network resources like files, e-mails, printers, and databases.
server
Which of the following is NOT a network communications device?
- Router
- LAN
Which of the following is the largest wide area (WAN)?
Internet
When a computer is connected to a network, it is called a:
node.
Which of the following network devices has the capability to determine the best path to transmit data and determine alternative pathways?
Router
Which of the following is the approximate effective inside range for a wireless LAN signals?
125 to 300 feet
A local area network (LAN) in which all the computers are equals is called a (n) ____ network.
peer-to-peer
A VPN operates as a private network over which larger type of network?
Internet
The term network topology refers to the:
physical layout of a local area network.
A ______ is a simple broadcast device that does not manage traffic and usually results in frequent collisions.
hub
Gigabit Ethernet makes a next generation application, such as _____, possible.
all of the above
Which of the following types of networks requires an access point?
WiFi
Which of the following features enable the strongest WiFi encryption protection?
WPA
_____, where networked computers work on small pieces of large complex tasks, is revolutionizing research in a number of areas…
- Distributed computing
- Group work
A point fo presence (POP) is a:
wired or wireless WAN network that enables users to access the WAN.
To carry computer data over the long haul, WANs need to have a (n) _____ in multiple towns and cities.
POP
Which of the following is the name for the high-capacity transmission lines that carry WAN traffic?
Backbones
……
Wired technologies are:
connected by a physical medium.
Which of the following is the path through which messages are sent from one location to another?
communications channels
The bandwidth of a digital signal is measured in:
bits per second (bps)
The word modem is a combination of which of the following words:
modulate and demodulate.
bandwidth refers to:
the amount of data that can be transmitted through a communication channel.
Which of the following terms is used to describe the transformation of analog signals into digital signals?
demodulation
What is the transfer rate of fiber-optic cable?
10Gbps
Which of the following wireless communications medium transmits through the air?
Infrared
Bluetooth is a(n) _____ radio transmission technology.
short-range
The maximum distance for microwaves is about ___ mile(s).
30
____ transmit data by sending and receiving microwave signals to and from Earth-based stations.
satellites
____ sends more than one call over a single line.
multiplexing
Which of the following is NOT true about digital telephony?
Most telephones in the local loop use digital telephony
DSL is ____ than dial-up but is often ____ than other broadband access options.
more expensive; less expensive
Which of the following is NOT true about piggybacking?
at present it is not considered a crime to
The current digital generation of phones is referred to as:
4g
To work over wireless networks, Web-enabled devices require:
WAP
WAP-enabled devices require a _____, a special Web browser that has all the features of computer-based browsers but is simplified to meet handheld device limitations.
microbrowser
The basic advantage of Internet telephony is that:
you don’t pay long distance charges.
Which of the following systems is used by the U.S. National Security Agency (NSA) to monitor international communications and search for phrases containing words such as bomb?
Echelon
