Alcatel-Lucent 4A0-100試験情報と無料練習テスト問題で合格せよ
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質問 # 94
A VPWS service maintains a MAC Forwarding Database (FDB) for Ethernet SAPs.
- A. False
- B. True
正解：A
質問 # 95
Which of the following statements about SDPs is FALSE?
- A. SDPs are not configured on CE devices.
- B. The same SDP ID can be used on multiple routers.
- C. Each service requires a unique SDP.
- D. SDPs are not configured on P routers.
正解：A
解説：
Section: Volume B
Explanation
質問 # 96
Which is the public AS in the diagram?
- A. 0
- B. None of the above.
- C. All of the above.
- D. 1
- E. 2
正解：D
質問 # 97
Which of the following command lines would be found in a list of commands designed to permit only certain type of traffic from exiting router RTR-A to router RTR-B?
- A. RTR-B>config>router>if>ingress# filter ip 1
- B. RTR-B>config>router>if>egress# filter ip 1
- C. RTR-A>config>router>if>egress# filter ip 1
- D. RTR-A>config>router>if>ingress# filter ip 1
正解：C
質問 # 98
Click the Exhibit Button below:
An Ethernet Local Area Network (LAN) consists of the components shown in the diagram below:
How many broadcast and collision domains are on this LAN?
- A. 9 broadcast domains, 3 collision domains.
- B. 3 broadcast domains, 3 collision domains.
- C. 1 broadcast domain, 9 collision domains.
- D. 3 broadcast domains, 9 collision domains.
正解：D
質問 # 99
What is available for auto completion of commands within the CLI on the Alcatel-Lucent 7750 SR Service Router?
- A. Type the first letters of the command, then press Esc
- B. Type the first letters of the command, then type ?
- C. Type the first letters of the command, then press Ctrl C
- D. Type the first letters of the command, then press Tab
正解：D
解説：
Section: Volume A
Explanation/Reference:
質問 # 100
Which ATM adaptation layer is usually used for connectionless data service?
- A. AAL2
- B. AAL1
- C. AAL5
- D. AAL3/4
正解：D
質問 # 101
What is the purpose of the Data Link Layer in the OSI model?
- A. The Data Link Layer is responsible for formatting the packet for applications such as JPEG format.
- B. The Data Link Layer is responsible for timing of the signals on the transmission media
- C. The Data Link Layer is responsible for encapsulating the packet into an IP header and routing the
packet. - D. The Data Link Layer is responsible for encapsulating the packet into a frame for transmission on the
transmission media.
正解：D
質問 # 102
Which statement accurately explains the purpose of the TCP protocol and what it provides?
- A. The primary purpose of TCP is to provide IP routing 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 reliable communications between application services.
- D. The primary purpose of TCP is to define the correct format for the application layer such as JPEG or HTML.
正解：C
解説：
Section: Volume A
質問 # 103
If a customer requires a point-to-point layer 2 VPN service between two locations which VPN service would be typically suited for this customer?
- A. Virtual Private Dark Fiber Service.
- B. Virtual Private Routed Networks.
- C. Virtual Private Wire Service .
- D. Virtual Private LAN Service.
正解：C
解説：
Section: Volume B
質問 # 104
Which of the following is TRUE regarding Ethernet half-duplex transmission?
- A. An end-station connected to a hub will always be half-duplex.
- B. All of the above.
- C. Ethernet switches only support half-duplex transmission.
- D. Half-duplex transmission is less efficient because the frame MTU is smaller.
正解：A
解説：
Section: Volume B
Explanation/Reference:
質問 # 105
Which statement best describes a VPRN service?
- A. From the customers perspective it looks as if all sites are connected to a private switched network administered by the service provider.
- B. From the customers perspective it looks as if all sites are connected by the same set of dark fibers.
- C. From the customers perspective it looks as if all sites are connected to a private routed network administered by the service provider.
- D. From the customers perspective it looks as if all sites have public internet access administered by the service provider.
正解：C
解説：
Section: Volume B
質問 # 106
Which of the following are considered Virtual Private Networks? Choose all that apply.
- A. VPLS
- B. IES
- C. VPRN
- D. VPWS
正解：A、C、D
質問 # 107
What next-hop should be used on CR1 to configure a default route to router R1?
- A. 10.2.3.2
- B. 10.1.1.1
- C. 10.2.3.1
- D. 192.168.2.0
正解：A
解説：
Section: Volume B
質問 # 108
On the Nokia 7750 SR, which key displays all command options and their descriptions?
- A. Return
- B. Space bar
- C. ?
- D. Tab
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
In theNokia SR OS CLI, specifically in bothclassic CLIandMD-CLI, the"?" keyis used to display a list of all possible command options at a given point in the CLI, along with a brief description of each option.
* This functionality helps the user in command discovery and reduces the chances of syntactical errors by showing only valid options.
* The"Tab"key, while helpful, is primarily used forauto-completionand not for displaying detailed descriptions.
* "Space bar"is used for command continuation, and"Return"executes the command or moves to the next line.
Correct usage example in classic CLI:
*A:SR1>config>router>interface# ?
- Shows all the valid commands and parameters under interface
Reference:
Nokia SRA Study Guide - Chapter: "CLI Fundamentals"
Nokia SR OS Fundamentals Guide - Section: "Using the CLI Help System"
質問 # 109
Which of the following describes a static default route?
- A. An entry included in the default configuration of the router that is used if no dynamic routing protocols or static routes are configured.
- B. An entry used by the routing protocol when it is unable to calculate the best route to the destination.
- C. A wildcard entry used when the destination network is not specifically defined in the routing table.
- D. An entry selected based on the route that has the least cost to the destination (path with the most physical bandwidth)
正解：C
質問 # 110
What are the tasks of the Routing Table Manager (RTM)? Choose two
- A. RTM sends its best route to all its directly connected neighbors.
- B. RTM selects the best route using the metric as criteria
- C. RTM installs its best route in the routing table.
- D. RTM selects the best route from among multiple routing protocols.
正解：C、D
質問 # 111
What must occur before two hosts can exchange data using TCP?
- A. Nothing. The two hosts can send data to each other at any time.
- B. The two hosts must perform a 3-way handshake before transmitting data.
- C. The two hosts must exchange encryption keys before transmitting data.
- D. The two hosts must negotiate a path MTU to be used for the data exchange.
正解：B
解説：
Section: Volume B
Explanation/Reference:
質問 # 112
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