Network Communications Test 2
An ad hoc arrangement would work well for a WLAN with many users?
false
The most popular method for connecting nodes on a network is circuit switching?
false
The smallest LANs do not have a backbone?
false
WiMAX is defined by the IEEE 802.11 standard?
false
Wireless networks are laid out using the same topologies as wired networks?
false
____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
frame aggregation
____ are combinations of networking hardware and software that connect two dissimilar kinds of networks.
gateways
At its most primitive, a ____ is a repeater with more than one output port.
hub
A complex combination of topologies is known as a ____ topology.
hybrid
If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.
interference
____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.
iwconfig
In the 10GBase-LR standard, the LR 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
In a ring network, each workstation acts as a(n) ____ for the transmission.
repeater
A ____ is a multiport connectivity device that directs data between nodes on a network.
router
A unique characteristic of the 802.11 data frame is its ____ field.
sequence control
Collectively, MPLS labels are sometimes called a ____.
shim
____ routing is a technique in which a network administrator programs a router to use specific paths between nodes.
static
Without ____, a bus network would suffer from signal bounce.
terminators
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
Modern Ethernet networks are based on the star topology?
true
The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.
twisted pair
The Ethernet II frame type contains a 2-byte ____ field that differentiates it from other Ethernet frame types.
type
____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.
channel bonding
A ____ occurs when two transmissions interfere with each other.
collision
On an Ethernet network, a(n) ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.
collision domain
Switches that operate anywhere between Layer 4 and Layer 7 are also known as ____ switches.
content
A ____ is simply a linked series of devices.
daisy-chaim
Traditional switches operate at the ____ layer of the OSI model.
data link
A physical topology ____.
depicts a network in broad scope
Switches can create ____ by grouping a number of ports into a broadcast domain.
VLANs
Given their long-distance capabilities, 10GBase-ER and 10GBase-EW are best suited for use on ____.
WANs
All Ethernet networks, independent of their speed or frame type, use an access method called ____.
CSMA/CD
In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.
active
A ____ can interpret physical addressing information.
bridge
The most common logical topologies are ____ and ring.
bus
____ is the least popular WLAN standard.
802.11a
____ may use either the 2.4-GHz or 5-GHz frequency range.
802.11n
1000Base-SX has a maximum throughput of ____.
1 gbps
1000Base-T is a standard for achieving throughputs ____ times faster than Fast Ethernet over copper cable.
10
An 802.11g antenna has a geographic range of ____ meters.
100
In the case of connecting two WLANs, access points could be as far as ____ feet apart.
1000
The most common 1-Gigabit Ethernet standard in use today is ____.
1000Base-LX
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
The average geographic range for an 802.11a antenna is ____ meters.
20
To eliminate the possibility of a broadcast storm, switches and bridges implement the ____.
STP (Spanning Tree Protocol)
