Network+ Ch 5, 6, 7, 9 Sample Quiz/Test

The typical media for ____ is UTP/STP (DS1 or DS3).

frame relay

In broad terms, ________ are combinations of networking hardware and software that connect two dissimilar kinds of networks.

gateways

A complex combination of topologies is known as a ____ topology.

hybrid

The ____ is largest WAN in existence today.

internet

As part of CSMA/CD, a process known as ____________________ allows the NIC issue a special 32-bit sequence that indicates to the rest of the network nodes that its previous transmission was faulty and that those data frames are invalid.

jamming

In the 10GBase-LR standard, the L stands for ____.

long reach

Within Ethernet frame types, the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.

preamble

In packet switching, when packets reach their destination node, the node ____ them based on their control information.

reassembles

WANs that use the ____ topology are only practical for connecting fewer than four or five locations.

ring

A ________ is a multiport connectivity device that directs data between nodes on a network.

router

Collectively, MPLS labels are sometimes called a ____.

shim

In a ________ topology, every node on the network is connected through a central device. star

star

Most Ethernet networks are based on the ____ topology.

star

In ________ mode, a switch reads the entire data frame into its memory and checks it for accuracy before transmitting the information.

store-and-forward

At the ends of each bus network are 50-ohm resistors known as ____.

terminators

Without ____, a bus network would suffer from signal bounce.

terminators

A T-carrier uses ________ over two wire pairs to divide a single channel into multiple channels.

time division multiplexing

The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.

twisted pair

ISDN BRI (Basic Rate Interface) uses ____ B channels and one D channel.

two

The Ethernet II frame type contains a 2-byte ____ field that differentiates it from other Ethernet frame types.

type

In a ____, a single router or switch is the highest layer of the backbone.

collapsed backbone

A ____ occurs when two transmissions interfere with each other.

collision

On an Ethernet network, a ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.

collision domain

A ____ is simply a linked series of devices.

daisy-chain

A ____ is the length of time data takes to travel from one point on the segment to another point.

data propagation delay

The smallest LANs do not have a backbone.

False

Typically, SONET technology is implemented by small- and medium-sized businesses because of its low cost.

False

____ is the capability for a component or system to continue functioning despite damage or malfunction.

Fault tolerance

________ is a digital version of X.25 that relies on packet switching.

Frame relay

Which mesh topology directly connects every WAN site to every other site?

Full-mesh

Which WAN topology provides the most fault tolerance?

Mesh topology WAN

____ requires that each device in the data's path has sufficient memory and processing power to accept and store the information before passing it to the next node.

Message switching

____ is a measure of the highest frequency of signal a multimode fiber can support over a specific distance and is measured in MHz-km.

Modal bandwidth

The unique Ethernet II 2-byte type field identifies the ________contained in the frame.

Network layer protocol

Which topology forms the basis for modern Ethernet networks?

Star-wired bus

________ are connectivity devices that subdivide a network into smaller logical pieces, or segments.

Switches

________ is a component of a network's logical topology that determines how connections are created between nodes.

Switching

A WAN link is a connection between one WAN site and another site.

True

A device driver is software that enables an attached device to communicate with the computer's operating system.

True

A logical topology is a characteristic of network transmission that reflects the way in which data is transmitted between nodes.

True

A network's access method is its method of controlling how network nodes access the communications channel.

True

A serial backbone is the simplest kind of backbone.

True

A server may act as a LAN gateway.

True

An advantage of SONET is its fault tolerance.

True

An enterprise-wide LAN or WAN may include different combinations of physical topologies and backbone designs.

True

Boundaries between the PSTN and computer networks have blurred over time.

True

Connecting multiple parts of a network with repeaters or hubs results in a larger collision domain.

True

Ethernet networks and the Internet are the most common examples of packet-switched networks.

True

If you extend a LAN beyond its recommended size, intermittent and unpredictable data transmission errors will result.

True

LANs and WANs often differ at Layers 1 and 2 of the OSI model in access methods, topologies, and sometimes, media.

True

Modern Ethernet networks are based on the star topology.

True

Network administrators should strive to minimize the number of broadcast frames on their networks.

True

Star networks can support a maximum of only 1024 addressable nodes on a logical network.

True

____ are connections between network nodes that, although based on potentially disparate physical links, logically appear to be direct, dedicated links between those nodes.

Virtual circuits

Which statement is true with regard to routers?

A router must connect to a switch to monitor network traffic and report statistics.

________ are devices that connect two network segments by analyzing incoming frames and making decisions about where to direct them based on each frame's MAC address.

Bridges

All Ethernet networks, independent of their speed or frame type, use an access method called ____.

CSMA/CD

Which access method does Ethernet use?

CSMA/CD

A ____ provides T-carrier digital signal termination.

CSU

The ________ is the connection point for a T1 line.

CSU/DSU

Broadband cable is a(n) ________ technology.

asymmetrical

In asynchronous communications, a node can transmit ________ .

at any instant

A network ____________________ is the part of a network to which segments and significant shared devices connect.

backbone

Physical topology depicts a network in ________ scope.

broad

The most common logical topologies are ____ and ring.

bus

Which physical topology consists of a single cable that connects all nodes on a network without intervening connectivity devices?

bus

What backbone topology uses a router or switch as the single central connection point for multiple subnetworks?

Collapsed

ATM technology functions at the OSI model ________ layer.

Data Link

Which statement is true with regard to switches?

Each port on a switch acts like a bridge.

Which technology is the most popular network technology used on modern LANs?

Ethernet

Which Ethernet frame type is most commonly used on contemporary Ethernet networks?

Ethernet II

A network's logical topology must match its physical topology.

False

A physical topology depicts a network in a narrow scope.

False

ATM is a widely deployed technology that could one day overtake the Ethernet.

False

All connectivity devices are capable of issuing power.

False

All frame types are well suited to carrying all kinds of traffic.

False

BPL is a cost-effective technology that will maximize the widely deployed electrical grid as infrastructure.

False

By far, the most popular expansion board NIC today is one that uses a PCI bus.

False

Each technology's maximum transmission speed is typically stated in terms of the actual limit.

False

ISDN is a North American standard for transmitting digital data over the PSTN, but has not yet caught on globally.

False

Routers can create VLANs within networks by grouping a number of ports into a broadcast domain.

False

Routers using RIP broadcast their routing tables every 30 seconds to other routers, but only if the tables have changed.

False

The 10Base-T Ethernet standard has a maximum distance per segment (m) of 1000.

False

The maximum throughput for a T1 line is 128 Kbps.

False

The most popular method for connecting nodes on a network is circuit switching.

False

Which IEEE standard applies to 10-Gigabit Fiber-Optic Standards?

802.3ae

A T1 circuit has a maximum data throughput of ________ Mbps.

1.544

1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable.

10

Fast Ethernet operates at ____.

100 Mbps

The most common 1-Gigabit Ethernet standard in use today is ____.

1000Base-LX

Which Ethernet technology is best suited for use on WANs?

10GBase-ER

The 10-gigabit fiber optic standard with the shortest segment length is ____.

10GBase-SR

Together, the FCS and the header make up the ____-byte "frame" for the data.

18

____ is the standard for connecting home computers to an ISP via DSL or broadband cable.

PPPoE

____ backbones are more expensive than other enterprise-wide topologies because they require much more cabling than the others.

Parallel

Which NIC attaches to the computer using an external PCMCIA slot?

Peripheral

DSL uses data modulation techniques at the ________ layer of the OSI model to achieve extraordinary throughput over regular telephone lines.

Physical

____ is a specification that guarantees delivery of data within a certain time frame.

QoS

________ are the simplest type of connectivity devices that regenerate a digital signal.

Repeaters

Which modular interface has made the GBIC largely obsolete?

SFP