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試験番号：4A0-107問題集
試験科目：Alcatel-Lucent Quality of Service
最近更新時間：2014-04-06
問題と解答：全100問
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NO.1 What is an SLA? (Choose two)
A. An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter
across a provider's network.
B. An SLA is an agreement between a customer and a provider that dictates the treatment of customer
traffic across the provider's network.
C. An SLA allows customers to control all traffic within the service provider's network by prioritizing their
traffic over others as desired.
D. An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement
within the provider's network.
E. An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing
them to better understand the treatment of traffic within the provider's network.
Answer: B,D
Alcatel-Lucent 4A0-107 4A0-107 4A0-107過去問 4A0-107 4A0-107
NO.2 How many bits does DSCP use to provide QoS marking options?
A. 8
B. 16
C. 6
D. 4
E. 3
Answer: C
Alcatel-Lucent参考書 4A0-107 4A0-107練習問題 4A0-107認定資格 4A0-107過去問
NO.3 Which of the following are possible criteria for classifying packets at the network port ingress on the
Alcatel-Lucent 7750 SR? (Choose three)
A. The EXP bits in the MPLS header.
B. The packet's source and destination IP addresses.
C. The packet's DSCP bits.
D. The dot1p bits in the frame header.
E. The ID of an SDP that is transporting the packet.
Answer: A,C,D
Alcatel-Lucent 4A0-107認定資格 4A0-107認定試験 4A0-107 4A0-107練習問題
NO.4 Which of the following are major components of QoS functionality on the Alcatel-Lucent 7750 SR?
(Choose three)
A. Microflow reservations using RSVP
B. DSCP to EXP translation
C. Traffic classification
D. Automatic profiling and policy configuration
E. Buffer memory management
F. Traffic scheduling
Answer: C,E,F
Alcatel-Lucent 4A0-107 4A0-107認定資格 4A0-107
NO.5 Which of the following are characteristics of 802.1p? (Choose two)
A. 802.1p adds 16 bits to the Layer 2 header,
B. 802.1p adds 16 bits to the Layer 3 header.
C. 802.1p specifies 64 different priority levels.
D. 802.1p uses a field in the 802.1Q header.
E. 802.1p uses a field in the Layer 3 IP header
F. 802.1p defines a 3-bit Class of Service field.
Answer: D,F
Alcatel-Lucent 4A0-107 4A0-107
NO.6 What is the maximum number of SAP-ingress policies that can be applied on a SAP?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 8
Answer: A
Alcatel-Lucent過去問 4A0-107認定資格 4A0-107認定試験 4A0-107
NO.7 Which of the following can be used as classifiers of customer traffic? (Choose three)
A. DSCP value
B. 802.1p value
C. IP DF bit
D. TCP/UDP port numbers
E. HTML version number
Answer: A,B,D
Alcatel-Lucent問題集 4A0-107 4A0-107 4A0-107
NO.8 Click the exhibit button below.
Based on the configuration shown below, name the forwarding class to be associated with a TCP packet
encapsulated inside an Ethernet frame that arrives on SAP 1/1/5 with the following characteristics:
Destination IP address = 120.110.1.1
TCP port number = 23
DSCP value = nc1
Dot1pvalue = 3
A. H2
B. NC
C. L2
D. EF
E. H1
F. BE
Answer: C
Alcatel-Lucent問題集 4A0-107認証試験 4A0-107認定試験 4A0-107 4A0-107
NO.9 Individual application streams are considered microflows, whereas __________ are considered
macroflows.
A. SAPs
B. SDPs
C. Services
D. Queues
E. Schedulers
F. Forwarding classes
Answer: F
Alcatel-Lucent 4A0-107 4A0-107認定資格
NO.10 Which of the following are characteristics of DSCP? (Choose two)
A. DSCP is part of the Layer 3 header.
B. DSCP is a 6-bit field.
C. DSCP specifies eight different priorities.
D. DSCP specifies four precedence levels.
E. DSCP is part of the Layer 2 header
F. DSCP specifies 128 different per-hop behaviors.
Answer: A,B
Alcatel-Lucent認証試験 4A0-107問題集 4A0-107 4A0-107認定試験
NO.11 What is the 6-bit binary representation of DSCP value AF21?
A. 010011
B. 100010
C. 010001
D. 001100
E. 010010
Answer: E
Alcatel-Lucent認定試験 4A0-107認定資格 4A0-107認定資格 4A0-107問題集
NO.12 Which of the following BEST describes a SAP when regarding QoS?
A. A point in the network where EXP bits can be mapped to one of eight predefined FCs, each one with its
own queue.
B. A logical point in a service tunnel where all of customer traffic is aggregated.
C. A point at which the initial classification of customer traffic occurs.
D. A point in the network where QoS parameters are discarded in favor of lower-level hardware queuing
functions, such as LLI (Link Layer Interleave).
E. A point in the network where traffic flows from multiple different services are queued together, based on
forwarding class.
Answer: C
Alcatel-Lucent 4A0-107認定資格 4A0-107過去問 4A0-107認定試験
NO.13 Which of the following statements regarding DSCP bits are TRUE? (Choose three)
A. The three most significant (first) bits define 8 forwarding classes.
B. The three least significant (last) bits of the DSCP specify the drop probability.
C. The full 8 bits of the TOS field are used for DSCP.
D. To convert DSCP to IP precedence, the three most significant (first) bits are matched.
E. DSCP provides for eight drop probabilities.
Answer: A,B,D
Alcatel-Lucent認証試験 4A0-107 4A0-107認定資格
NO.14 Which of the following are examples of metrics for QoS.?
A. Signal degradation, attenuation, line loss
B. Latency, FIFO, WRED
C. Delay, jitter, packet loss
D. SNR, queue depth, latency
E. Attenuation, dispersion, latency
Answer: C
Alcatel-Lucent 4A0-107 4A0-107認定資格 4A0-107 4A0-107練習問題
NO.15 The IP ToS field consists of ________ bits, of which ________are used. The _________most significant
(first) bits define precedence.
A. 8, 6, 3
B. 8, 8, 6
C. 16, 8, 4
D. 8, 6, 4
E. 24, 16, 8
Answer: A
Alcatel-Lucent 4A0-107 4A0-107過去問
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