Depends on the number of switches in the spanning tree domain
50 seconds
15 seconds
Until the root directs it to start forwarding
20 seconds
Depends on the pott speed
第1题:
Predictable security vulnerabilities
Economies of scale
Improved expenditure forecasts
Increased downtime
Predictable equipment obsolescence
Consumption of fewer resources
第2题:
Content pre-positioning
Automatic discovery of Cisco WAEs
Comprehensive logs, reports, and graphs
Remote scheduling of software distribution
第3题:
发热期监测体温、热型及伴随症状
保持皮肤黏膜清洁,防止感染
急性期给予普食
注意观察心血管症状
注意药物不良反应
第4题:
Mirror
Rogue Detector
Sniffer
Monitor
第5题:
show spantree backbonefast
show spantree statistics
show spantree uplinkfast
show spantree blockedports
show spantree portstate
show spantree portvlancost
第6题:
RTP multiplexing is used to keep multiple phone conversations separate
RTP provides end-to-end delivery services for voice traffic.
UDP is used to ensure a reliable transmission from sender to receiver.
RTP is used to provide resource reservation for the voice stream.
UDP provides multiplexing of multiple phone conversations.
第7题:
VT circuits
STS circuits
VT tunnel circuits
1:1 protection circuits
1:N protection circuits
第8题:
Create an IPv4 tunnel and assign the tunnel IPv6 addresses
Create IPv4 interfaces on both ends of the network, and use either static routes or a routingprocess to direct IPv6 packets through those interfaces
IPv6 packets cannot be encapsulated with IPv4 headers because the addresses are notcompatible
Create IFV6 interfaces on both ends of the network, and use static routes to point the IPv4address to those interfaces
Use an IPv6 routing protocol like OSPFv3 and assign IPv4 packets to that process
Create an IPv4 tunnel and use the tunnel mode ipv6ip command
第9题:
吸氧
建立静脉通路
保持呼吸道通畅
镇静止惊,降颅压
头颅CT
第10题:
to provide VPN access over L2TP
to enable PPP session from the router to the termination device at the headend for metro Ethernet connectivity
for DSL connectivity and removing the need for the end - user PC to ru n the PPPoE client software
for connecting the router to a cable modem, which bridges the Ethernet frames from the router to the cable modem termination system