單項(xiàng)選擇題Which statement about SNMP is true?()

A.SNMP version 2 uses a proxy agent to forward GetNext message to SNMP version 3.
B.SNMP version 2 supports message integrity to ensure that a packet has not been tampered with
C.Proxy agents were used only in SNMP version 1.
D.SNMP version 3 supports encryption and SNMP version 2 support authentication.
E.GetBulk messages are converted to GetNext messages by the proxy agent and are then forwarded to the SNMP version 1 agent.


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1.多項(xiàng)選擇題In relation to MPLS Multicast VPN, which three statements about multicast distribution (MDT) groups aretrue? ()

A.Default MDT groups are used for PIM control traffic, low-bandwidth sources, and flooding of sparse mode traffic.
B.MDTs are built in customer networks
C.Data MDT groups are used for high-bandwidth sources to reduce replication to uninterested PEs.
D.MDTs are built in provider networks
E.The number of MDTs depends on PIM modes of MDT groups.

2.單項(xiàng)選擇題Which type of AAL does ATM utilize to deliver CBR traffic?()

A.AAL2
B.AAL 4
C.AL 5
D.AAL 1
E.AAL 3

3.多項(xiàng)選擇題Which two models are the models of DiffServ-Aware Traffic Engineering? ()

A.Policy-based Model
B.Class based Model
C.Russian Doll Model
D.Global Tunnel Model
E.Maximum Allocation Model

4.多項(xiàng)選擇題Which three are optional extensions of the Frame Relay Local Management Interface specification?()

A.switched virtual circuit
B.virtual circuit status
C.simple flow control
D.multicasting
E.permanent virtual circuit

5.多項(xiàng)選擇題In the Carrier Support Carrier (CsC) feature, which two protocols run CSC-PE and CSC-CS ?()

A.EBGPv4 with a sending community
B.IGP and LDP
C.EBGPv4 with a sending label
D.IGP and EBGPv4
E.IGP and RSVP

6.單項(xiàng)選擇題Which statement about standard STS-1 SONET framing is true?()

A.8 rows by 64 bytes
B.6 rows by 64 bytes
C.10 rows by 96 bytes
D.8 rows by 128 bytes
E.9 rows by 90 bytes

7.單項(xiàng)選擇題What is the default BGP scanner time?()

A.10 minutes
B.5 minutes
C.120 seconds
D.60 seconds
E.30 minutes

9.多項(xiàng)選擇題Which three of these can be a forwarding equivalence class? ()

A.IPsec tunnel
B.routing equivalence paths
C.traffic engineering tunnel
D.bridge or switch instance
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