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Ciena Practice Test A
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Preguntas del test (40)
1 Which OSI (Open Systems Interconnection) layer ensures a reliable arrival of messages and provides error checking mechanisms?
- ATransport layer
- BNetwork layer
- CData Link layer
- DApplication layer
2Each layer of the OSI (Open Systems Interconnection) model adds its overhead information to the data from the layer above, a process known as encapsulation.
- AVerdadero
- BFalso
3Which one of the following is the size of the MAC (Media Access Control) address?
- A8 bytes
- B32 bits
- C48 bits
- D24 bits
4Which of the following is NOT one of the three basic elements of the IEEE 802.3 standard?
- APhysical media
- BEthernet architecture, internetworking, and management
- CMAC rules for sharing the transmission channel
- DEthernet frame format
5For an Ethernet frame, when the I/G (Individual/Group) bit is set to a zero (0), the frame is to be sent to a group of NEs/stations.
- AVerdadero
- BFalso
6Select which action, or actions, would be performed by a Switch when it receives and inspects a unicast destination MAC address for an Ethernet frame.
- ALook for the address in the MAC address table. If not found, filter (drop) the frame.
- BFlood the frame out all ports within the broadcast domain.
- CLook for the address in the MAC address table. If found, forward the frame on the port on which the address was learned.
- DAdd the MAC address to the MAC address table
7Select which of the following is NOT a benefit of using VLANs
- ASeparation of data during service delivery
- BReduction in the amount of hardware required
- CSmaller broadcast domain
- DReduction in provisioning requirements
8Select which IEEE standard defines a VLAN-tagged Ethernet frame
- A802.3
- B802.1ad
- C802.1Q
- D802.1Qay
9The minimum frame size of an Ethernet frame is 46 bytes.
- AVerdadero
- BFalso
10 Which of the following is a NE (Network Element) in a CE (Carrier Ethernet) network?
- ANMS server
- BA VLAN
- CA switch
- DA sniffer
11Choose three characteristics that are requirements for a Network Element (NE) to function in the network core.
- AAuto provisioning
- BScalability
- CCoS support
- DHigh speed ports
- EQoS support
- FSLA support
12Which of the following characteristics applies to a customer edge NE in a Carrier Ethernet (CE) network?
- AScalability
- BVirus protection
- CReal time data processing
- DQoS support
13Select which of the following is NOT a requirement for customer edge Network Elements (NEs).
- AScalability
- BLow cost
- CQoS support
- DBasic VLAN support
14Select the three basic logical topologies that are used to implement standardized services.
- ARing
- BMesh
- CStar
- DP2P (Point-to-Point)
- EP2MP (Point-to-Multipoint)
- FMP2N (Multipoint-to-Network)
- GMP2MP (Multipoint-to-Multipoint)
15What are three benefits of VoIP (Voice over IP)?
- AImproved voice quality over traditional circuit switched phone service
- BAnywhere-to-anywhere number portability
- CReduction or elimination of long distance rates
- DVoIP equipment is inherently interoperable
- EConvergence with video services
- FImmunity to loss of line power
16A cable fault in a star topology will result in loss of connectivity to at least one NE.
- AVerdadero
- BFalso
17The ____________________ network topology provides the highest level of reliability and fault tolerance, even with multiple points of failure.
- ARing
- BMesh
- CStar
- DBus
18The mesh topology is easier to troubleshoot than the star or ring topologies.
- AVerdadero
- BFalso
19An advantage of ring topologies is that they do not require loop prevention measures, therefore reducing the cost to implement.
- AVerdadero
- BFalso
20A Carrier Ethernet E-Line service would be implemented using which type of logical topology?
- APoint-to-Point (P2P)
- BPoint-to-Multipoint (P2MP)
- CMultipoint-to-Multipoint (MP2MP)
- DMultipoint-to-Point (MP2P)
- ENone of the above
21 Select the three Carrier Ethernet services that are VLAN-based (choose three)
- AEthernet Private Line (EPL)
- BEthernet Virtual Private Line (EVPL)
- CEthernet Private LAN (EP-LAN)
- DEthernet Virtual Private LAN (EVP-LAN)
- EEthernet Private Tree (EP-Tree)
- FEthernet Virtual Private Tree (EVP-Tree)
22Select the mechanism used to transport data transparently over a Carrier Ethernet network.
- AEncryption
- BTranslation
- CCompression
- DEncapsulation
23Select the protocols that provide encapsulation and the creation of Ethernet Virtual Connections (EVCs) (select three).
- AGeneralized Routing Encapsulation (GRE)
- BQ-in-Q (802.1ad)
- CRapid Spanning Tree Protocol (RSTP)
- DMultiprotocol Label Switching (MPLS)
- EProvider Backbone Bridge Traffic Engineering (PBB-TE)
24Which of the following is a configurable service attribute?
- ABandwidth profile
- BFrame loss
- CDelay
- DFrame delay variation
25Which type of traffic is generally assigned the highest IEEE 802.1Q priority level?
- AVoice traffic
- BVideo traffic
- CNetwork control traffic
- DBest effort traffic
26Which QoS parameter is used to constrain the average rate up to which excess service frames can ingress the provider’s network?
- ACommitted information rate (CIR)
- BExcess information rate (EIR)
- CCommitted burst size (CBS)
- DExcess burst size (EBS)
27The acronym OAM refers to:
- AOperation, Application and Management
- BOperation, Administration and Maintenance
- COffset, Addressing and Messaging
- DOperation, Administration and Multiprotocol
28 Which type of multicast message is sent periodically by Maintenance End Points (MEPs) in order to monitor network connectivity?
- ALoopback Messages (LBMs)
- BLink Trace Messages (LTMs)
- CContinuity Check Messages (CCMs)
- DNone of the above
29 Which performance measurement, defined by the ITU-T Y.1731 standard, has been included in network OAM functionality?
- AFrame delay
- BFrame loss
- CJitter
- DAll of the above
30 Which of the following Connectivity Fault Management (CFM) message types can be used to isolate a service fault?
- AContinuity Check Message (CCM)
- BLink Trace Message (LTM)
- CLoopback Message (LBM)
- DNone of the above
31 Which protection type sends duplicate traffic on both the primary and backup paths at all times?
- A1+1 Protection
- BM:N Protection
- CN:M Protection
- D2:1 Protection
32 An edge port does not normally participate in spanning tree operations.
- AVerdadero
- BFalso
33Which spanning tree port type functions as a blocked port and provides a secondary path away from the root?
- AAlternate port
- BDesignated port
- CBackup port
- DRoot port
34 Which of the following is true about ERPS (ITU-T G.8032) ring protection switching?
- AERPS works by blocking one of the links in the ring network.
- BAfter a link failure, the nodes in the ring flush their forwarding database.
- CMultiple protection instances can be configured on a single ring.
- DAll of the above
- ENone of the above
35Use of the IEEE 1588v2 protocol in a network can provide timing accuracy in the submicrosecond range.
- AVerdadero
- BFalso
36 IEEE 1588v2 uses a packet-based method, while SyncE uses the physical layer for synchronization.
- AVerdadero
- BFalso
37A scenario which can benefit from the synchronization distribution capability provided by SyncE and IEEE 1588v2 is:
- ASLA monitoring
- BEvent log correlation
- CMobile backhaul
- DAll of the above
38 Choose the standard or protocol which enables Class of Service (CoS) by providing a 3-bit field in a VLAN tag for prioritizing of various classes of data:
- ASimple Network Management Protocol (SNMP)
- BDynamic Host Configuration Protocol (DHCP)
- CIEEE 802.1Q
- DIEEE 802.1Qay
39Select the service attribute which can be used to determine the service level that a customer might receive:
- ADelay
- BQuality of Service (QoS)
- CAvailability
- DAll of the above
40 Voice, video and data services are examples of:
- AAccess-based services
- BConnectivity-based services
- CAll of the above
- DNone of the above
Información
- Descripción
- Associate CE-A Test sobre Ciena Practice Test A, creado por Joshua Hendrickson el 17/06/2016.
- Autor
- Joshua Hendrickson
- Idioma
- English
- Visitas
- 1
- Historial
- Creado el 17 jun 2016 · actualizado el 26 jun 2016
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test