COP 18595

subject Type Homework Help
subject Pages 9
subject Words 1088
subject Authors Julia L. Panko, Raymond R. Panko

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For ADSL service, which of the following typically must be added to the telephone
system?
A) a DSLAM
B) a transmission line to the customer premises
C) both A and B
D) neither A nor B
The path that a frame takes across a single network is a ________.
A) physical link
B) data link
C) route
D) all of the above
Priority is assigning high priority to ________ applications while giving low priority to
________ applications.
A) latency-tolerant, latency-intolerant
B) latency-intolerant, latency-tolerant
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4-pair UTP terminates in a(n) ________ connector.
A) USB
B) RJ-45
C) SC
D) standard telephone
In QAM, if you have eight possible amplitudes, how many bits can you send per clock
cycle?
A) 3
B) 6
C) 8
D) 16
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The SIP invite is transmitted to the ________.
A) called party's SIP proxy server
B) called party's VoIP phone or computer
C) both A and B
D) neither A nor B
Ethernet does ________.
A) error detection
B) error correction
C) both A and B
D) neither A nor B
For PBXs, camp-on is ________.
A) a user service
B) an attendant service
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C) a management service
An Ethernet switch knows ________.
A) an IP address for each EUI-48 address
B) a single port number for each EUI-48 address
C) multiple port numbers for each EUI-48 address
D) the entire path from the source host to the destination host
Untwisting wire pairs no more than 1.25 cm (a half inch) at their ends reduces
________.
A) interference
B) crosstalk interference
C) terminal crosstalk interference
D) none of the above
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The source host and destination host are separated by seven networks. There will be
seven ________.
A) packets
B) frames
C) physical links
D) none of the above
Which layer's standards govern signaling?
A) 1
B) 2
C) 3
D) 4
page-pf6
Link aggregation can increase trunk speed by a factor of ________.
A) two
B) three
C) both A and B
D) neither A nor B
________ is placing a message in the data field of another message.
A) Encoding
B) Vertical communication
C) Layering
D) Encapsulation
Express the mask /24 in dotted decimal notation.
A) 255.0.0.0
B) 255.255.0.0
C) 255.255.255.0
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D) none of the above
An HTTP response message usually has a ________.
A) trailer
B) data field
C) both A and B
D) neither A nor B
Managed access points should ________.
A) allow access point power to be adjusted remotely
B) provide constant transmission quality monitoring
C) both A and B
D) neither A nor B
page-pf8
SNMP ________ commands can change how managed devices operate.
A) Get
B) Set
C) both A and B
D) neither A nor B
A single access point and the set of hosts it serves is called a(n) ________.
A) BSS
B) BSSID
C) ESS
D) none of the above
page-pf9
What does a router do with Address Resolution Protocol request messages?
A) It broadcasts them.
B) It sends them directly to the destination host.
C) It sends them to a next-hop router.
D) It sends them to the default next-hop router.
Which working group is likely to develop security standards to be used by multiple
LAN/WAN technologies?
A) 802.1
B) 802.e
C) 802.3
D) 802.11
SONET/SDH uses a ________ topology.
A) point-to-point
B) hierarchy
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C) mesh
D) ring
Cells are used in cellular telephony to provide ________.
A) service for more customers
B) greater reliability
C) greater transmission speed
D) all of the above
If a company has multiple authentication servers, which devices are likely to hold the
authentication data?
A) authenticators
B) authentication servers individually
C) authentication servers doing replication
D) directory servers
page-pfb
What type of copper wiring is widely used in Ethernet?
A) optical fiber
B) 4-pair UTP
C) both A and B
D) neither A nor B
In an extended service set, each access point ________.
A) must have the same SSID
B) must have different SSIDs
C) must have coordinated SSIDs
D) none of the above
page-pfc
MPLS ________ the work that each router must do to deliver a packet during a traffic
exchange.
A) reduces
B) increases
C) does not affect
D) occasionally reduces
In unlicensed bands, ________.
A) you can use radios wherever you please
B) you can prevent nearby businesses from setting up access points in the same channel
C) both A and B
D) neither A nor B
Which of the following is a private IP address range?
A) 10.x.x.x
B) 128.171.x.x
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C) both A and B
D) neither A nor B
In an IPv4 packet, the ________ field value tells the type of message contained in the
IP packet's data field.
A) data
B) next-hop
C) next-header
D) protocol
CSMA/CD+ACK is ________.
A) unreliable
B) reliable
C) semireliable
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Ethernet is inexpensive thanks to ________.
A) its hierarchical topology
B) its use of multiple switches
C) its use of regeneration
D) its use of the Rapid Spanning Tree Protocol
Attacking your own firm occurs in ________.
A) vulnerability testing
B) auditing
C) both A and B
D) neither A nor B
page-pff
For human reading, symbols in IPv6 addresses are written in fields of ________
symbols.
A) 1
B) 2
C) 4
D) 16
________ have SSIDs.
A) Wireless clients
B) Wireless access points
C) both A and B
D) neither A nor B

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