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what is TTL？
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考题
下列关于TTL数字集成电路的说法中,正确的是()。
A.TTL电路输出端不允许直接接电源B.TTL电路输出端允许直接接电源C.TTL电路输出端不允许直接接地D.TTL电路输出端允许直接接地
考题
Refer to the exhibit, Host A pings interface S0／0 on router 3, what is the TTL value for that ping?()
A. 253B. 252C. 255D. 254
考题
In MPLS networks, what s the benefit of disabling TTL propagation?（）A、To provide a visible extension of MPLS TTL functionality in a non MPLS-enabled domainB、To improve the IGP convergence timeC、To hide visibility to the core (provider) routers in the MPLS networkD、To provide a visible extension of IP TTL functionality in an MPLS-enabled domain
考题
FabricPath brings the benefits of routing protocols to layer 2 network Ethernet environments. What are the advantages of using FabricPath technology？ （） A、 FabricPath provides MAC address scalability with conversational learningB、 Loop mitigation with TTL in the frame fieldC、 STPl independenceD、 10 Gbps bandwidthE、 Layer 2 extensions between data centers
考题
下面关于IP报文头部中TTL字段的说法正确的是（）。A、TTL定义了源主机可以发送数据包的数量B、TTL定义了源主机可以发送数据包的时间间隔C、IP报文每经过一台路由器时，其TTL值会被减一D、IP报文每经过一台路由器时，其TTL值会被加一
考题
MPLS对TTL的处理有两种方法，其中一种是把MPLS TTL计入IP TTL，如果一个TTL为10的IP报文通过三台路由器所组成的MPLS域时，它的TTL会减为（）。A、7B、8C、9D、10
考题
What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）A、LSAs from other routersB、Beacons received on point-to-point linksC、hello packetsD、Routing tables received from neighborsE、SAP packets sent by other routersF、TTL packets from exclusive routers
考题
What is the default Time to Live （TTL） valuse in Cisco FabricPath？（）A、 128B、 32C、 64D、 Dependent on the number of switch IDs in the topology
考题
Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）A、The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRB、TTL propagation cannot be disabled in an MPLS domainC、TTL propagation is only disabled on the ingress edge LSRD、The TTL field of the MPLS label header is set to 255E、The TTL field of the IP packet is set to 0
考题
单选题In MPLS networks, what s the benefit of disabling TTL propagation?（）A
To provide a visible extension of MPLS TTL functionality in a non MPLS-enabled domainB
To improve the IGP convergence timeC
To hide visibility to the core (provider) routers in the MPLS networkD
To provide a visible extension of IP TTL functionality in an MPLS-enabled domain
考题
单选题供电电压相同时，CMOS电路与TTL电路输出的高电平与低电平的情况为（）A
CMOS的输出高电平比TTL的输出高电平高，低电平比TTL输出的低电平低B
CMOS的输出高电平比TTL的输出高电平高，低电平比TTL输出的低电平高C
CMOS的输出高电平比TTL的输出高电平低，低电平比TTL输出的低电平低D
CMOS的输出高电平比TTL的输出高电平低，低电平比TTL输出的低电平高
考题
单选题Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）A
The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRB
TTL propagation cannot be disabled in an MPLS domainC
TTL propagation is only disabled on the ingress edge LSRD
The TTL field of the MPLS label header is set to 255E
The TTL field of the IP packet is set to 0
考题
多选题FabricPath brings the benefits of routing protocols to layer 2 network Ethernet environments. What are the advantages of using FabricPath technology？ （）AFabricPath provides MAC address scalability with conversational learningBLoop mitigation with TTL in the frame fieldCSTPl independenceD10 Gbps bandwidthELayer 2 extensions between data centers
考题
多选题The IP multicast global configuration command ip pirn send - rp - announce IoopbackO scope 31 group - list 5 issued on multicast router RTA. What are the two results? （）ARTA will forward RP announcements provided they are within the scope of 31.BRTA will originate RP announcements with TTL s et to 31.CRTA will originate RP announcements for multicast groups that match access - list 5.DRTA will drop all RP announcements it receives if the TTL field is greater than 31.
考题
多选题What are two valid match criteria for a routing policy?（）AOSPF area IDBprefix listCportDtime-to-live (TTL)
考题
单选题What is the default Time to Live （TTL） valuse in Cisco FabricPath？（）A
128B
32C
64D
Dependent on the number of switch IDs in the topology
考题
多选题What are two valid match criteria for a routing policy? （）AOSPF are a IDBprefix listCportDtime-to-live（TTL）
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