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Network
Topologies Quiz
1. In a basic Ring topology, if there
is a line break, or if you are adding or
removing a device anywhere in the ring
this will bring down the network.
True False
2. Computers on a bus only listen for
data being sent they do not move data
from one computer to the next, this is
called ?
active topology
passive topology
static topology
dynamic topology
computer topologies
active topology
network topologies
3. Ethernet is also known as ?
802.5
803.2
802.11b
802.3
computer topologies
4. What topology provides each device
with a point-to-point connection to
every other device in the network ?
Star
Bus
Mesh
Hierarchical
active topology
network topologies
5. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
active topology
6. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
7. A line break at any point along the
trunk cable in a Bus network will result
in total network failure.
True False
8. Token Ring standards define services
for the OSI, MAC sublayer of the data
link layer, and what other layer ?
Application
Session
Physical
Network
9. Ethernet uses the Carrier Sense
Multiple Access with Collision Detection
access method.
True False
10. Fiber Distributed Data Interface,
shares many of the same features as ?
Ethernet
Token rings
Wireless Ethernet
11. Mesh topologies are the least
expensive and are easier to maintain.
True False
12. Ring topology is an ?
active topology
static topology
passive topology
dynamic topology
computer topologies
active topology
network topologies
13. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
14. Wireless Ethernet.
802.5
803.2
802.11b
802.3
15. Since most star topologies use
twisted-pair cables, this makes the
initial installation of star networks
easier.
True False
16. If one computer fails in a star
topology the network will continue to
function.
True False
17. If computers are connected along a
single cable this is called what type of
topology ?
Star
Bus
Hierarchical
Mesh
18. The number of computers on a bus
network will NOT affect network
performance.
True False
19. In a star topology, if a hub fails
all computers connected to it will also
be affected.
True False
20. Most Bus networks use what kind of
cables ?
unshielded twisted-pair
10Base-T
100Base-TX
coax
21. What is, or is becoming the topology
of choice for networks ?
Bus
Star
Hierarchical
Mesh
ANSWERS
Network Topologies Answers
1. In a basic Ring topology, if there is
a line break, or if you are adding or
removing a device anywhere in the ring
this will bring down the network.
True False
Correct answer: True
Explanation: In an effort to provide a
solution to this problem, some network
implementations (such as FDDI) support
the use of a double-ring. If the primary
ring breaks, or a device fails, the
secondary ring can be used as a backup.
2. Computers on a bus only listen for
data being sent they do not move data
from one computer to the next, this is
called ?
active topology
passive topology
static topology
dynamic topology
Correct answer: passive topology
3. Ethernet is also known as ?
802.5
803.2
802.11b
802.3
Correct answer: 802.3
4. What topology provides each device
with a point-to-point connection to
every other device in the network ?
Star
Bus
Mesh
Hierarchical
Correct answer: Mesh
5. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
computer topologies
Correct answer: Mesh
6. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
Correct answer: Hierarchical
7. A line break at any point along the
trunk cable in a Bus network will result
in total network failure.
True False
8. Token Ring standards define services
for the OSI, MAC sublayer of the data
link layer, and what other layer ?
Application
Session
Physical
Network
Correct answer: True
9. Ethernet uses the Carrier Sense
Multiple Access with Collision Detection
access method.
True False
Correct answer: True
10. Fiber Distributed Data Interface,
shares many of the same features as ?
Ethernet
Token rings
Wireless Ethernet
Correct answer: Token rings
Explanation: But FDDI has better fault
tolerance because of its use of a dual,
counter-rotating ring that enables the
ring to reconfigure itself in case of a
link failure. FDDI also has higher
transfer speeds, 100 Mbps for FDDI,
compared to 4 - 16 Mbps for Token Ring.
11. Mesh topologies are the least
expensive and are easier to maintain.
True False
Correct answer: False
Explanation: ecause each device has a
point-to-point connection to every other
device, mesh topologies are the most
expensive and difficult to maintain.
12. Ring topology is an ?
active topology
static topology
passive topology
dynamic topology
Correct answer: active topology
13. What type of topology is this ?
Mesh
Star
Hierarchical
Bus
Correct answer: Bus
14. Wireless Ethernet.
802.5
803.2
802.11b
802.3
Correct answer: 802.11b
15. Since most star topologies use
twisted-pair cables, this makes the
initial installation of star networks
easier.
True False
Correct answer: True
16. If one computer fails in a star
topology the network will continue to
function.
True False
Correct answer: True
17. If computers are connected along a
single cable this is called what type of
topology ?
Star
Bus
Hierarchical
Mesh
Correct answer: Bus
18. The number of computers on a bus
network will NOT affect network
performance.
True False
Correct answer: False
Explanation: Since only one computer at
a time can send data, the more computers
you have on the network the more
computers there will be waiting send
data.
19. In a star topology, if a hub fails
all computers connected to it will also
be affected.
True False
Correct answer: True
20. Most Bus networks use what kind of
cables ?
unshielded twisted-pair
10Base-T
100Base-TX
coax
Correct answer: coax
21. What is, or is becoming the topology
of choice for networks ?
Bus
Star
Hierarchical
Mesh
Correct answer: Star
NETWORKING BASICS
A network is a group of computers,
printers, and other devices that are
connected together with cables. The
sharing of data and resources.
Information travels over the cables,
allowing network users to exchange
documents & data with each other, print
to the same printers, and generally
share any hardware or software that is
connected to the network. Each computer,
printer, or other peripheral device that
is connected to the network is called a
node. Networks can have tens, thousands,
or even millions of nodes.
Cabling:
The two most popular types of network
cabling are twisted-pair (also known as
10BaseT) and thin coax (also known as
10Base2). 10BaseT cabling looks like
ordinary telephone wire, except that it
has 8 wires inside instead of 4. Thin
coax looks like the copper coaxial
cabling that's often used to connect a
VCR to a TV set.
Network Adapter:
A network computer is connected to
the network cabling with a network
interface card, (also called a "NIC",
"nick", or network adapter). Some NICs
are installed inside of a computer: the
PC is opened up and a network card is
plugged directly into one of the
computer's internal expansion slots.
286, 386, and many 486 computers have
16-bit slots, so a 16-bit NIC is needed.
Faster computers, like high-speed 486s
and Pentiums, , often have 32-bit, or
PCI slots. These PCs require 32-bit NICs
to achieve the fastest networking speeds
possible for speed-critical applications
like desktop video, multimedia,
publishing, and databases. And if a
computer is going to be used with a Fast
Ethernet network, it will need a network
adapter that supports 100Mbps data
speeds as well.
Hubs
The last piece of the computer
networking puzzle is called a hub. A hub
is a box that is used to gather groups
of PCs together at a central location
with 10BaseT cabling. If you're
networking a small group of computers
together, you may be able to get by with
a hub, some 10BaseT cables, and a
handful of network adapters. Larger
networks often use a thin coax
"backbone" that connects a row of
10BaseT hubs together. Each hub, in
turn, may connect a handful of computer
together using 10BaseT cabling, which
allows you to build networks of tens,
hundreds, or thousands of nodes. Like
network cards, hubs are available in
both standard (10Mbps) and Fast Ethernet
(100Mbps) versions.
LANs (Local Area Networks)
A network is any collection of
independent computers that communicate
with one another over a shared network
medium. LANs are networks usually
confined to a geographic area, such as a
single building or a college campus.
LANs can be small, linking as few as
three computers, but often link hundreds
of computers used by thousands of
people. The development of standard
networking protocols and media has
resulted in worldwide proliferation of
LANs throughout business and educational
organizations.
WANs (Wide Area Networks)
Often a network is located in
multiple physical places. Wide area
computer networking combines multiple
LANs that are geographically separate.
This is accomplished by connecting the
different LANs using services such as
dedicated leased phone lines, dial-up
phone lines (both synchronous and
asynchronous), satellite links, and data
packet carrier services. Wide area
networking can be as simple as a modem
and remote access server for employees
to dial into, or it can be as complex as
hundreds of branch offices globally
linked using special routing protocols
and filters to minimize the expense of
sending data sent over vast distances.
Internet
The Internet is a system of linked
networks that are worldwide in scope and
facilitate data communication services
such as remote login, file transfer,
electronic mail, the World Wide Web and
newsgroups. With the meteoric rise in
demand for connectivity, the Internet
has become a communications highway for
millions of users. The Internet was
initially restricted to military and
academic institutions, but now it is a
full-fledged conduit for any and all
forms of information and commerce.
Internet websites now provide personal,
educational, political and economic
resources to every corner of the planet.
Intranet
With the advancements made in
browser-based software for the Internet,
many private organizations are
implementing intranets. An intranet is a
private network utilizing Internet-type
tools, but available only within that
organization. For large organizations,
an intranet provides an easy access mode
to corporate information for employees.
Ethernet
Ethernet is the most popular physical
layer LAN technology in use today. Other
LAN types include Token Ring, Fast
Ethernet, Fiber Distributed Data
Interface (FDDI), Asynchronous Transfer
Mode (ATM) and LocalTalk. Ethernet is
popular because it strikes a good
balance between speed, cost and ease of
installation. These benefits, combined
with wide acceptance in the computer
marketplace and the ability to support
virtually all popular network protocols,
make Ethernet an ideal networking
technology for most computer users
today.
The Institute for Electrical and
Electronic Engineers (IEEE) defines the
Ethernet standard as IEEE Standard
802.3. This standard defines rules for
configuring an Ethernet network as well
as specifying how elements in an
Ethernet network interact with one
another. By adhering to the IEEE
standard, network equipment and network
protocols can communicate efficiently.
Protocols
Network protocols are standards that
allow computers to communicate. A
protocol defines how computers identify
one another on a computer network, the
form that the data should take in
transit, and how this information is
processed once it reaches its final
destination. Protocols also define
procedures for handling lost or damaged
transmissions or "packets." TCP/IP (for
UNIX, Windows NT, Windows 95 and other
platforms), IPX (for Novell NetWare),
DECnet (for networking Digital Equipment
Corp. computers), AppleTalk (for
Macintosh computers), and
NetBIOS/NetBEUI (for LAN Manager and
Windows NT networks) are the main types
of network protocols in use today.
Although each network protocol is
different, they all share the same
physical cabling. This common method of
accessing the physical network allows
multiple protocols to peacefully coexist
over the network media, and allows the
builder of a network to use common
hardware for a variety of protocols.
This concept is known as "protocol
independence," which means that devices
that are compatible at the physical and
data link layers allow the user to run
many different protocols over the same
medium.
Topologies
A network topology is the geometric
arrangement of nodes and cable links in
a LAN, and is used in two general
configurations: bus and star. These two
topologies define how nodes are
connected to one another. A node is an
active device connected to the network,
such as a computer or a printer. A node
can also be a piece of networking
equipment such as a hub, switch or a
router. A bus topology consists of nodes
linked together in a series with each
node connected to a long cable or bus.
Many nodes can tap into the bus and
begin communication with all other nodes
on that cable segment. A break anywhere
in the cable will usually cause the
entire segment to be inoperable until
the break is repaired. Examples of bus
topology include 10BASE2 and 10BASE5.
10BASE-T Ethernet and Fast Ethernet use
a star topology, in which access is
controlled by a central computer.
Generally a computer is located at
one end of the segment, and the other
end is terminated in central location
with a hub. Because UTP is often run in
conjunction with telephone cabling, this
central location can be a telephone
closet or other area where it is
convenient to connect the UTP segment to
a backbone. The primary advantage of
this type of network is reliability, for
if one of these 'point-to-point'
segments has a break, it will only
affect the two nodes on that link. Other
computer users on the computer network
continue to operate as if that segment
were nonexistent.
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