4A0-100 Alcatel-Lucent Service Routing Certification Exam Study Guide, Exams of Telecommunications Engineering

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4A0- 100 Alcatel-Lucent Service Routing Certification Exam Study Guide

1. You are configuring your Alcatel-Lucent 7730SR 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? - CORRECT ANSWER Ctrl-z ORRECT ANSWER-A dev! analysis of the data. 2. Which of the following best describes a repeater? - reecives and retransmits a signal out its ports, but do: 3. How do pratocals such as ATM and Frame-Relay support differentiating multiple customers or traffic types on the same physical wire? - CORRECT ANSWER-ATM and Frame-Relay circuit switched protocols and use Virtual Cire are ts to create logical separation of traffic. ANSWER-Provides an universal addressing scheme 5. The 201,148.26. addresses will you obtain with this mask’ 0/24 network is subnetted using a /25 mask. How many subnets and host 4 subnets, 52 hosts 6. What kind of information can a Dynamic Host Configuration Protocol (DHCP) client rece: CORRECT ANSWER IP addresses and their lease times. 7. List some statements that characterize Link State Routing - CORRECT ANSWER-Routers flood link information throughout the entire area: Network con seconds) aftor a topology change. 8. Which statement accurately explains the purpose of the TCP protocol and what it provides? - CORRECT ANSWER The primary purpose of TCP is to provide reliable communications sen application se §. which of the following is the best description of well known ports? - CORRE" Woll known port numbers are used by both TCP and UDP. Well known port numbers to 1023 and are assigned by IANA. 10. Which organization first considered cross-platform networking support to be a necessity? - 11. Which of the following statements best describes ARPANET? ARPANET was an early packet switched network initially conne Santa Barbara, UCLA, and U of Utah). - CORRECT ANSWER- (Stanford, UC 12. Kahn solved the problem of interconnecting different networks using different protocols by NS pioneering a new protocol called TCP that was capable ‘Providing host to host connectivity with global addressing. 15.Which organization eventually became the standards body for IP and related protocols? - CORRECT ANSWERIETF 25. The TIMOS-m.n. YZ software image file is software that - CORR. all the components required to configure and run protocols on the Alcatel-Lucent 7730 SR/7450 ESS. -Contains 26. When entering a command on the Alcatel-Lucent 7750 SR from the Command Line Interface (CLD what would you use to list all the options for the command? - CORRECT ANSWER-? 27. Which of the following describes the Alcatel-Lucent 7750 SR Input/Output Module OM)? - CORRECT ANSWER-Contains a CPU for managing the forwarding hardware in each flexible 28. A Lypical Alcatel-Lucent 7750 SR Media Dependent Adapter (MDA) interfaces with: - CORRECT ANSWER-A Small Form-Factor Pluggable (SFP) module. 29. Which of the following best describes the operation of the Media Dependent Adapter (MDA)? - CORRECT ANSWER-The MDA converts data from its incoming physical format. into an intemal format and provides some minimal buffering. 30. What is NOT a function of the IOM ?- CORRECT ANSWER-It converts the incoming data to an internal format. 31. Which compact flash on a Control/Switch processor of an Alcatel-Lucent 7750 router slores the runtime image and running configuration? - CORRECT ANSWER-CF 3 32. One of the tasks of the boot options file (BOF) is to: - CORRECT ANSWER-Define an IP address for the CPM Ethernet port. 33. Which of the following user interface sessions are accessible through Telnet and Secure Shell (SSH) on the Alcatel-Lucent 7750 SR and 7450 ESS° - CORRECT ANSWER-Command Line Interface (CLD. 34. You are working from a particular Command Line Interface (CLD context, and want to see the commands available from your current context. What command can you issue Lo view Lhis information? - CORRECT ANSWER-tree 35. What is available for auto completion of commands within the CLI on the Alcatel-Lucent press Tab 36. Which of the following is a File command in the File System context of the Command Line RE ER type 37. What must occur fora LAG to become operational? - CORRECT ANSWER-AII ports in the LAG must be configured with the same characteristics. 38. Ifa 4-port LAG is configured with the option of ’port-threshold 2’ and ’action down’ what CORRECT ANSWER-The LAG will will happen if the total operational links in the LAG is 2?- be changed Lo an operational state of ‘down’. gcnoral¢ a jam signal. 49, What is required if devices on different VLANs wish to communicate with each other? - CORRECT ANSWER Devices on different VLANs can communicate with each other if there is ect the VLANs. a0. A 24 port Ethernet switch is configured with VLAN 106 on ports 1-8, VLAN 206 on ports 9 - 16 and VLAN 300 on ports 17 - 24. Which of the following describes the behavior of the switch when a broadcast frame is received on port 1?- CORRECT ANSWER The switch will flood the broadcast frame on ports 2 to 8. 51. The method by which Ethernet frames are associated 1a a specific VLAN is referred Lo as: - ch-Tagging 32. What information is used to separate VLANs on a VLAN trunk that connects multiple VLANS? - CO] -VLAN tag 33. Using Q-in-Q Virtual Local Area Network (VLAN) stacking, how does a carrier differentiate ER-The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network. one customers traffic from that of another a4, What is the purpose of the Data Link Layer in the OSI model? - CORRECT ANSWER-The Dala Link Laycr is responsible for encapsulating lhe packet into a frame for sion on the transmission media. a5. Which of the following is typically a characteristic of Layer 2 framing? - CORRECT a7. Why is the address field in a PPP header always set to "11111111"?- CORRECT ANSWER- PPP supports point-to-point networks only. The address field is fixed. 38. Which ATM adaptation layer is commonly used for transporting IP datagrams or non-real time data? - CORRECT. ANSWER-AALS a, What are characteristic of ATM? - 1.Application data is transported . 3.Provides enhanced QoS support W with 3 classes of service; and 4. Ideal for multiple services on the same physical line. 60. What is the basic unit of framing in SONET and the bit rate for its transmission? - CORRECT ANSWER-STS-1 with a bit rate of 51.84 Mbit/s 61. What is the basic unil of framing in SDH and the bit rate for its transmission? - CORRECT STM-1 with a bit rate of 155.52 Mbit/s 62. What are examples of Time Division Multiplexing? - CORRECT ANSWER-L.SONET/SDH: and 2. El Carrier 64, Who was responsible for developing and publishing the original standard that was used for 10 Mbit/s Ethernet? - CORRECT ANSWER-DEC-Intel-Xerox. 65. Which Ethernet frame field does the receiver use to verify the integrity of the received bits? - CORRECT ANSWER-Frame check sequence 75. Which of the following is a characteristic of the IP layer? - CORRECT ANSV an unreliable, connectionless data transmission service. FeProvides 76. The physical networks connecting two PCs to the internet are DSL and PPP respectively. Which layer will enable the two PCs to communicate? - CORRECT ANSWER-Layer 3 77. Hosts in the same IP network share which common address feature? Same network prefix. 79. Public IP address spaces are distributed by which of the following organizations? - CORRECT ANSWER IANA 80. What characteristic of IP addressi ales a hicrarchical network? ANSWER IP address s identify a host and the network on which it res 81. Which of the following is a privale IP network address reserved by the LANA? - CORR! ANSWER-172.30.0.0/16 82. Which type of IP address contains the network number and all 1’s for the host address? - CORRECT ANSWER Broadcast address. 83. Complete the following sentence: The introduction of the subnet address added another - CORRECT ANSWER Layer of hierarchy in the addressing structure. 84. What bit pattern identifies the network address in the subnet mask? - CORR) Astring of ls \NSWER-Provides an address that refers to all the devices in a given network. 86. What are important considerations when designing subnets? - Number of subnetworks currently required; 2. Future network growth requireme Number of hosts each subnetwork will support 87. You need to create 12 subnetworks supporting 10 host addresses each. Using a Network address of 200.12.30.0 and a Network mask of 255.253.255.0, which cxtonded prefix will meet this requirement? - CORRECT ANSWER-/28 88. Given the associated prefix value, which of the following is a valid host address? - CORRECT ANSWER-172.16.224.250/18 89. A network administrator is creating a subnet plan for the address 172.16.0.6/16 . The network must support 459 hosts on each subnet while providing the maximum number of subnets. What. subnet mask should be used? - CORRECT. 34.0 $1. Given a network addre using the subnet mask 23 101. Which of the following is a characteristic of Port Address Translation? - C ANSWER-An IP filler is applicd to allow or deny IP packets into a network. 103. Which of the following command lines would be found in a list of commands designed ta permit only certain type of traffic from exiting router RTR-A to router RTR-B?- CORRECT 104. What is the scquenee of messages sent by a host when it altempts Lo ping a destination for which it has no Address Resolution Protocol (ARP) cache entry? - CORRECT ANSWER-ARP request, ARP reply, ICMP echo request, ICMP echo reply. 10 5, Which of the following best describes the function of an ARP cache within the same subnet? /E-R-Resolves the MAC address of a host device given its IP address. 106. What is the sequence of events for a client to receive an IP address from the server in the DHCP?- CORRECT ANSWER Discover, offer, request, acknowledgement. messages are encapsulated within an IP datagram. 108. What protocol is used by ping to verify IP network reachability? - CORRECT ANSWER- ICMP 109. When a device in an IP network receives an echo request message that is destined for itself, it then: - CORRECT ANSWER Generates an echo reply. 116. What ICMP message type will a router use to indicate to a host that an IP datagram sourced from that host cannot be delivered? - CORRECT ANSWER Destination Unreachable. 111. A set of tasks that move a packet from its entry into an IP network to its exit from the IP network. This describes: - CORRECT ANSWER-IP routing 112. Which field in the IP routing table contains the name or address of the neighbour that advertised the prefix to the router? - CORRE the routing table. 114. Which of the following is characteristic of a static route? - CORRECT ANSWER- Explicitly defines the next hop based on operator input. 115. Which of the following describes a static default route? - CORRECT ANSWER-A wildcard 118. Skip #118 as it included an Exhibit - CORRECT ANSWER-SKIPPED 127. Which of the following describes the normal sequence of events in the forming of an OSPF adjacency? - CORRECT ANSWER-Hello exchange, DB descriptor exchange, Link state requests and updai 128. Skip #128 as it included an Exhibit - 130. Skip #130 as it included an Exhibit - CORRECT ANSWER-SKIPPED 131. Which of the following best describes an autonomous system?- CORRECT ANSWER-An autonomous system is anclwork or group of networks operating under one admil authority. 132. Which transport protocol and port number is used by BGP to establish and maintain a CORRECT ANSWER-1. BGP is an exterior unning BGP protocol 133. What are some of the characteristics of BGP? galoway protocal; 2. BGP routing is based on distai needs an Autonomous system number 135. Skip #133 as it included an Exhibit - ANSWER-SKIPPED 137. Which of the following statements describes the purpose of the Transport Layer in the TCP/IP stack? - CORR. layers. ‘f-Provides a data transport service to higher protocol 138. Which of the following is NOT a function of TCP? - method for routing data across the network. «Defining the 139. What must occur before two hosts can exchange data using TCP?- CORRECT ANSWER- The two hosts must perform a 3-way handshake before transmitting data. 146. Host A is transmitting data to host B ona TCP connection. What is the purpose of the ACK sont by host B? - ER-The ACK tells host A the sequence number of the next. segment that host B expects to see. 142. What is the purpose of the source and destination ports in the TCP header’ AN, TCP connection. ER-These ports are used as an address to identify the upper layer application using the 143. Which of the following is NOT a field ina TCP header? - CORR. ANSWER MTU 144. Which of the following fields is not a field in the TCP header used for the establishment and termination of a TCP connection? - CO! 154. What capability of TCP/IP allows two hosts to have multiple TCP sessions to each other simultaneously? - CORRECT ANSWER-The combination of IP source and destination address and TCP source and destination port uniquely identifies each session. 155. What operation is performed by an LSR when it receives an MPLS labeled packet? - CORRECT ANSWER-The LSR relors to ils MPLS label lable, swaps the label and forwards tho forwarding decisions based on the MPLS labe. 157. In an MPLS network, which device is responsible for taking an unlabeled packet and encapsulating it with an MPLS label? - CORRECT. 158. What are characteristics of MPLS labels?- CORRECT ANSWER-1. A series of labels from used for a LSP may be static but are usually signaled dynamically with an MPLS label signaling protocol: 3. one LER to another LER represent a logical tunnel known as an LSP; 2. Labels Labels are locally significant to the MPLS router which means its possible for two routers on the LSP path to use the same label. 159. Which device is responsible for removing the MPLS label before the packet reaches lhe CE device? - CORRECT ANSWER-The egress LER removes the MPLS label. 160. Which protocols are used for the dynamic signaling of MPLS labels? - CORRECT ANSWER-RSVP-TE and LDP °R-LDP follows the path chosen by the IGP. 162. A CE device has a physical connection to which device in the service providers MPLS network? - CORRECT ANSWER-CE always connects to a PE router. 163. What are accurate statements about the PE device in a service providers MPLS network? - ¢ Al loasl one CE dev LA PE router connects to at least one P rout: PE router connects to at sc;PE routers support many different intorface types connecting Lo CE dev 164. Where would you expect to find a P router in a service provider's network?- CORRECT ANSWER-VPWS, VPLS; 167. Which statement best describes a SAP? - CORRECT. >The Service Access Point is defined on the PE device and is the custome: s access to the service. 168. Multiple SAPs may be defined on the same physical port and may be used for different 169. SAP's may be a port, a port with a specific VLAN Lag in the case of an Ethernet port, or a port with a specific Circuit ID in the case of ATM or Frame Relay. - CORRECT ANSWER-True