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Code d'Examen: 4A0-100
Nom d'Examen: Alcatel-Lucent (Alcatel-Lucent Scalable IP Networks)
Questions et réponses: 180 Q&As
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NO.1 To transmit its segments of data across the network TCP uses the services of which layer
A.Application Layer.
B.Transport Layer.
C.IP Layer.
D.Data Link Layer
ANSWER: c
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NO.2 Choose two true statements that characterize Link State Routing
A.Routers send a copy of their routing table to their neighbors periodically.
B.Routers flood link information throughout the entire area.
C.Network converges quickly (within several seconds) after a topology change.
D.Routers do not have precise knowledge of the entire network topology.
ANSWER: cd
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NO.3 The 201.148.26.0/24 network is subnetted using a /26 mask. How many subnets and host addresses
will you obtain with this mask?
A.4 subnets, 64 hosts
B.64 subnets, 4 hosts
C.4 subnets, 62 hosts
D.64 subnets, 2 hosts
E.6 subnets, 30 hosts
ANSWER: c
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NO.4 Which network was created to replace ARPANET?
A.INWG
B.ALOHANET
C.IETF
D.NSFNET
ANSWER: d
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NO.5 Which of the following are protocols belonging to the OSI suite of protocols? (Choose two)
A.OSPF
B.BGP
C.X.500
D.IS-IS
E.Ethernet
ANSWER: de
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NO.6 You are configuring your Alcatel-Lucent 7750SR Service Router from the Command Line Interface
(CLI), and after entering a lengthy command, wish to return directly to the ROOT context. Which control
command allows you to do this quickly?
A.Ctrl-z
B.Ctrl-c
C.Esc
D.Shift-Page Down
ANSWER: a
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NO.7 Which of the following best describes a repeater?
A.A passive device simply used to connect two or more cables. Does not generate or amplify any signals.
B.A device that receives and retransmits a signal out its ports, but does not do any Layer 2 analysis of the
data.
C.A device that receives a signal and based on the Layer 2 destination address, makes a decision on
which ports the signal should be retransmitted.
D.A device that receives a signal and based on the Layer 2 destination address, makes a decision on
which ports the signal should be retransmitted.
E.A device that receives a signal and based on the Layer 3 destination address, makes a decision on
which ports the signal should be retransmitted.
ANSWER: b
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NO.8 What is the name for an organization that provides Internet services to its customers
A.A large corporation.
B.An ISP.
C.A home based business.
D.A content provider.
ANSWER: b
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NO.9 Which statement best describes how the internet evolved?
A.The internet emerged in the commercial world in the 1980s following the US militarys adoption of
TCP/IP in 1983.
B.The internet evolved from a military to a research to a commercial based network.
C.The internet remained primarily a research based network and was only commercially adopted in 2000
when the world wide web was conceived.
D.Internet service providers provided the services necessary for military based networks to evolve into
research and education based networks.
ANSWER: b
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NO.10 Which of the following is a feature of Layer 3?
A.Provides an universal addressing scheme
B.Ensures data is delivered across the Layer 2 network.
C.Provides reliable data transfers.
D.Provides a physical interface to the network.
ANSWER: a
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NO.11 How do protocols such as ATM and Frame-Relay support differentiating multiple customers or traffic
types on the same physical wire?
A.ATM and Frame-Relay are circuit switched protocols and use Virtual Circuits to create logical
separation of traffic.
B.ATM and Frame-Relay are point-to-point protocols and do not support different customers or traffic type
on the same physical wire.
C.ATM and Frame-Relay are circuit switched protocols and use VLAN's to create logical separation of
traffic.
D.ATM and Frame-Relay are circuit switched protocols and use IP Header information to create logical
separation of traffic.
ANSWER: a
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NO.12 which of the following is the best description of well known ports?
A.Well known ports apply to routers only and are used for communication and control traffic. Well known
port numbers are assigned by IANA and can have any value.
B.Well known ports are used by TCP and UDP. Well known port numbers range from 1024 to 65535 and
are assigned by IANA.
C.Well known port numbers are used by both TCP and UDP. Well known port numbers range from 1 to
1023 and are assigned by IANA.
D.Well known ports numbers are used by TCP only. Well known port numbers are assigned by IANA and
can have any value.
ANSWER: c
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NO.13 Kahn solved the problem of interconnecting different networks using different protocols by pioneering
a new protocol called TCP that was capable of:
A.Secure transmission of information.
B.Enforcing a constant packet size to avoid discards.
C.Allowing remote logins.
D.Providing host to host connectivity with global addressing.
ANSWER: d
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NO.14 Which statement accurately explains the purpose of the TCP protocol and what it provides?
A.The primary purpose of TCP is to provide reliable communications between application services.
B.The primary purpose of TCP is to provide unreliable communications between application services
C.The primary purpose of TCP is to provide IP routing between application services.
D.The primary purpose of TCP is to define the correct format for the application layer such as JPEG or
HTML.
ANSWER: a
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NO.15 What kind of information can a Dynamic Host Configuration Protocol (DHCP) client receive?
A.Details of the configuration settings of each router on the network.
B.A list of other DHCP clients.
C.IP addresses and their lease times.
D.Server time information
ANSWER: c
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NO.16 Which of the following statements best describes ARPANET?
A.ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa
Barbara, UCLA, and U of Utah).
B.The mission of ARPANET was to connect packet switched networks and other diverse networks,
making an international network of networks.
C.ARPANET connected sites spread around the Hawaiian Islands to a central time-sharing computer on
the University of Hawaii campus.
D.ARPANET was based on the use of TCP/IP to interconnect diverse systems.
ANSWER: a
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NO.17 The IANA is responsible for:
A.Intra-city ISP traffic.
B.Allocation of the global IP address space.
C.Allocating IP addresses for residential customer traffic.
D.Allocating North American IP addresses .
ANSWER: b
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NO.18 Which organization first considered cross-platform networking support to be a necessity?
A.IBM.
B.US Military.
C.Alcatel-Lucent.
D.NASA.
E.Bell Labs
ANSWER: b
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NO.19 Which of the following is an important advantage of protocol layering? (Choose two)
A.Controls distribution of IP addresses.
B.Simplifies protocol functionality.
C.Isolates changes in lower layers from upper layers.
D.Increases protocol operational efficiencies.
E.Layering adds to the fragmentation of the data
ANSWER: cd
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NO.20 Which organization eventually became the standards body for IP and related protocols?
A.IEEE
B.IETF
C.NSFNET
D.ITU-T
E.APNIC
ANSWER: b
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