A protocol is concerned with exchanging data between two entities.
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In 1994 the Internet Architecture Board issued a report titled “Security in the Internet
Architecture” that stated that the general consensus was that the Internet was secure and
there were no areas of security concern.
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The IP address provides a way of uniquely identifying devices attached to the Internet.
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Many traffic sources can be defined easily and accurately by a token bucket scheme.
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A general query is used to learn which groups have members on an attached network.
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Wireless LANs are not as vulnerable to interference and eavesdropping as wired LANs.
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A key task of an internet is to deliver data from a source to one or more destinations
with the desired QoS.
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One of the most powerful features of MPLS is label stacking.
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Single bit errors are more common and more difficult to deal with.
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Integrated services are provided on the basis of a 6-bit label in the IP header, which
classifies traffic in terms of the type of service to be given by routers for that traffic.
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Mobile radio communication introduces complexities not found in wire communication
or in fixed wireless communication.
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A problem with a two-way handshake is the potential loss of segments and the potential
presence of obsolete segments.
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The use of resource reservation can enable routers to decide ahead of time if they can
meet the requirement to deliver a multicast
transmission to all designated multicast receivers and to reserve the appropriate
resources if possible.
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Data rate and distance are not a key concern when designing a data transmission
system.
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Amplitude modulation is a linear process and produces frequencies that are the sum and
difference of the carrier signal and the components of the modulating signal.
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Circuit switching is the basis for private networks built on leased lines and using on site
circuit switches.
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Cells in areas of high usage can be split into smaller cells.
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A retransmission timer is the only timer needed for proper functioning of a transport
protocol.
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Selective reject is a useful choice for a satellite link because of the long propagation
delay involved.
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Backpressure is a technique for congestion control.
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Spamming of multicast groups is difficult.
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Only one frame may be in the pipe at a time with sliding-window flow control.
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In full-duplex operation both stations may transmit, but only one at a time.
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LDPC codes cannot be efficiently implemented for high-speed use.
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A packet with a multicast address is transmitted on a LAN segment.
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The RTP Timestamp is the absolute wall clock time when this report was sent.
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Data are transmitted over an internet in packets from a source system to a destination
across a path involving a single network and routers.
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Domains are organized hierarchically.
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The multiplexer combines data from the input lines and transmits over a lower capacity
data link.
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Like IP, MPLS is connection oriented.
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Typically standards for packet-switching network interfaces do not define a virtual
circuit service.
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A familiar example of analog data is audio, which, in the form of acoustic sound waves,
can be perceived directly by human beings.
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Client/server computing has become a dominant architecture in the business
environment.
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With fixed routing there is no difference between routing for da and virtual circuits.
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Microwave is used for satellite communications.
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IEEE802.3b defines the operation of VLAN bridges and switches.
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OpenFlow can be used with network traffic involving a variety of protocols and
network services.
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Only one mobile user unit may be active and communicating with the base station at a
time.
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Large numbers of voice and data transmissions can be carried simultaneously using
multiplexing.
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With CSMA/CD the amount of wasted capacity is reduced to the time it takes to detect
a collision.
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The ________ multiplexing is the most heavily used. A familiar example is broadcast
and cable television.
A) statistical time division
B) time division
C) frequency division
D) synchronous time division
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A next generation IP, known as ________, provides longer address fields and more
functionality than the current IP.
A) IPv6
B) IPv5
C) IPv3
D) IPv4
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_______ are constructed based on link level addresses.
A) CEs
B) L2VPNs
C) L3VPNs
D) CR-LDPs
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The ________ layer is concerned with the exchange of data between an end system and
the network to which it is attached.
A) internet
B) physical
C) host-to-host
D) network access
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When signals at different frequencies share the same transmission medium the result
may be ________ noise.
A) crosstalk
B) white
C) intermodulation
D) impulse
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The transmitted data in synchronous TDM are organized into ________.
A) blocks
B) frames
C) channels
D) frequencies
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(A) Process received bits to compute the syndrome code in exactly the same fashion as
the encoder processes the data bits to produce the check code; (B) if the syndrome bits
are all zero, no error has been detected; and (C) if the syndrome is nonzero, perform
additional processing on the syndrome for error correction, — is the procedure for the
decoding of a _________ code.
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________ have as their fundamental purpose dynamically finding a route through an
internet between any source and any destination.
A) Routing protocols
B) Tunnel protocols
C) Label protocols
D) Traffic protocols
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The _________ is a string of 1-bit storage devices with each device having an output
line, which indicates the value currently stored, and an input line.
A) shift register
B) parity
C) digital logic
D) none of the above
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The device used for converting analog data into digital form for transmission, and
subsequently recovering the original analog data from the digital, is a ________.
A) modem
B) ASK
C) PAM
D) codec
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A VLAN ________.
A) must not indicate VLAN membership
B) is also referred to as a TCI
C) can span multiple interconnected switches
D) is limited to one switch
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__________ schemes are based on providing an explicit data rate limit to the source
over a logical connection.
A) Backward
B) Rate based
C) Forward
D) Binary
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Flow control allows routers and receiving stations to limit the rate at which they receive
data.
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______ is a congestion control technique.
A) Choke packet
B) Implicit congestion signaling
C) Backpressure
D) All of the above
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The ________ accepts the multiplexed data stream, separates the data according to
channel, and delivers data to the appropriate output lines.
A) high capacity fiber
B) coaxial link
C) multiplexer
D) demultiplexer
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In a MIMO scheme the transmitter employs a single antenna.
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Messages must be formatted by the MUA on behalf of the message author so that the
message can be displayed to the message recipient by the destination MUA.
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A ________ is a physical facility that provides the infrastructure to move data between
connected networks.
A) ATM
B) FDDI
C) NAP
D) NSP
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The primitive issued by a service provider to either indicate that a procedure has been
invoked by the peer service user on the connection and to provide the associated
parameters or notify the service user of a provider initiated action is ________.
A) request
B) confirm
C) indication
D) response
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The IEEE 802.3 standard is known as ________.
A) Ethernet
B) layer 2 switching
C) fibre channel
D) subnetworking
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________ is used on the downlink channel to enable the base station to transmit
different data streams to multiple users over the same frequency band.
A) OFDM
B) SC-FDMA
C) MIMO-BC
D) all of the above
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The _________ connects different physical networks in order to provide end-to-end
connectivity.
A) softphone
B) IP PBX
C) media gateway
D) SIP
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Like OFDM, _______ employs multiple closely spaced subcarriers, but the subcarriers
are divided into groups of subcarriers.
A) CDMA
B) IFFT
C) QPSK
D) OFDMA
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A(n) ________ signal is a sequence of voltage pulses that may be transmitted over a
wire medium.
A) audio
B) text
C) digital
D) analog
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In the ________ topology the transmission medium is a branching cable with no closed
loops.
A) bus
B) linear
C) ring
D) tree
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The transmission medium between systems is referred to as a ________ when a data
link control protocol is used.
A) data link
B) flow link
C) transmission link
D) control link
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A key component of an MPLS network is the use of ________ to optimize and manage
the load.
A) session distribution
B) nodes
C) labeled routers
D) traffic engineering
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The header format for TCP is a minimum of ________ octets.
A) 16
B) 8
C) 20
D) 160
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With ________, a station wishing to transmit first listens to the medium to determine if
another transmission is in progress. If the medium is in use, the station must wait. If the
medium is idle, the station may transmit.
A) ALOHA
B) transmission backlog delay
C) Ethernet
D) CSMA
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The ________ of a signal is the distance occupied by a single cycle.
A) bandwidth
B) frequency
C) wavelength
D) amplitude
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An IS used to connect two LANs that use similar LAN protocols and acts as an address
filter, picking up packets from one LAN that are intended for a destination on another
LAN and passing those packets on, is a ________.
A) router
B) bridge
C) broadcast
D) end system
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A __________ is a device that allows a user to access the Internet and other online
services through a cable TV network.
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In TCP the combination of port and host is referred to as a ________.
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Forward error correction schemes are frequently used in __________
transmission, where retransmission schemes are highly inefficient and error rates may
be high.
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__________ extends the basic MIMO concept to multiple endpoints, each with multiple
antennas.
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A ________ query is used to learn if a particular group has any members on an attached
network.
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Modulation does not permit frequency division multiplexing.
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The ________ is a measure of how much additional bandwidth is required to carry data
at the same data rate as without the code.
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The ________ is an algorithm that converts a set of uniformly spaced data points from
the time domain to the frequency domain.
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The MPLS architecture supports two routing options: hop-by-hop and ________.
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IEEE 802.3ba specifies three types of transmission media: copper backplane, twisted
pair and ________.
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The IEEE 802.11 standards do not include a specification of speed versus distance
objectives.
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The header section is not always present in a DNS message.
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The ability to define routes dynamically, plan resource commitments on the basis of
known demand, and optimize network utilization is referred to as ________.
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An ________ is an entity that has station functionality and provides access to
the distribution system via the wireless medium for associated stations.
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________ traffic is the type of traffic for which internets were designed.
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The most widely used protocol architecture is the ________ protocol suite, which
consists of physical, network access, internet, transport, and application layers.
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The digital subscriber line combines FDM and ________ technologies.
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