A.for trail trace identification
B.as the backward defect indicator
C.to transmit information between OTU termination points
D.to extend command and management functions over several frames
E.General communication channels 1 and 2 （GCC1/GCC2） do not belong to OTU OH
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A.PPPoE can provide a host with access to a destination over Ethernet. You can have only one PPPoE session per PVC
B.You must install PPPoE client software on all hosts that connect to the Ethernet segment. This means that the access provider must maintain a CPE
C.You cannot use PPPoE with Cisco Service Selection Gateway
D.PPPoE implementation is susceptible to broadcast storms and possible denial-of-service attacks
E.Per-session accounting is possible， which allows the service provider to charge the subscriber based on session time for various services offered. The service provider can also require a minimum access charge
A.prefix-list， route-map， filter-list， distribute list
B.route-map， filter-list， prefix-list， distribute-list
C.route-map， distribute-list， prefix-list， filter-list
D.filter-list， prefix list， route-map， distribute list
E.distribute list， prefix-list， route-map， fitter list
A.express mode
B.safe mode
C.loose mode
D.strict mode
E.tight mode
A.SLA responder knows type of operation， the port used， and duration.
B.SLA responder inserts in and out timestamps in the packet payload.
C.SLA sender and responder use the IP SLA Control Protocol to communicate with each other before
D.SLA sender and responder communication can be encrypted.
E.SLA sender and responder communication can be authenticated with MD5.
A.opaque LSA （Type 8）
B.opaque LSA （Type 9）
C.link LSA （Type 1）
D.network LSA （Type 2）
E.opaque LSA （Type 10）
最新試題
Which statement about multicast VPN is true？（）
Which two requirements to deploy 6PE and 6VPE solutions are mandatory？（）
Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）
When an MPLS Layer 2 VPN runs in the hub-and-spoke model， where is QoS implemented？（）
Which three statements about MPLS traffic engineering （MPLS TE） are true？ （）
Which three protocols use TLVs to carry attributes？（）
In the Carrier Supporting Carrier （CsC） feature， which two protocols run between CSC-PE and CSC-CE（）.
Which two statements about DS-Lite are true？（）
Which tree of these are types of Ethernet Virtue Connections （EVCs） in the MEF concept？（）
What layer of the TMN （telecommunications management network） model does CTM fit into？（）