违法和不良信息举报 联系客服
免费注册 登录

单选题When debugging a routing problem, the time-to-live (TTL) value can be used to determine:（）A Number of routes available.B Number of router hops.C Time that an advertised route is valid.D Time to make a round trip.

题目
单选题
When debugging a routing problem, the time-to-live (TTL) value can be used to determine:（）
A

Number of routes available.

B

Number of router hops.

C

Time that an advertised route is valid.

D

Time to make a round trip.

参考答案和解析
正确答案： A
解析： 暂无解析
如果没有搜索结果或未解决您的问题，请直接 联系老师 获取答案。
相似问题和答案

第1题：

What are three key concepts that apply when configuring the EIGRP stub routing feature in a hub and spoke network?()

A. A hub router prevents routes from being advertised to the remote router.

B. Only remote routers are configured as stubs.

C. Stub routers are not queried for routes.

D. Spoke routers connected to hub routers answer the route queries for the stub router.

E. A stub router should have only EIGRP hub routers as neighbors.

F. EIGRP stub routing should be used on hub routers only.


参考答案：B, C, E

第2题：

The TTL field was originally designed to hold a time stamp, which was decremented by each visited router. The datagram was ( ) when the value became zero. However, for this scheme, all the machines must have synchronized clocks and must know how long it takes for a datagram to go from one machine to another. Today, this field is used mostly to control the ( ) number of hops (routers) visited by the datagram. When a source host sends the datagram, it ( ) a number in this field. Each router that processes the datagram decrements this number by 1. If this value, after being decremented, is zero, the router discards the datagram.This field is needed because routing tables in the Internet can become corrupted.A datagram may travel between two or more routers for a long time without ever getting delivered to the (请作答此空).This field limits the ( ) of a datagram.

A.switch
B.router
C.source host
D.destination host

答案：D
解析：
TTL的基本概念。

第3题：

When debugging a routing problem, the time－to－live (TTL) value can be used to determine:()

A. Number of routes available.

B. Number of router hops.

C. Time that an advertised route is valid.

D. Time to make a round trip.


参考答案：B

第4题：

When EIGRP is used as the PE-CE routing protocol which of these statements is correct?（）

  • A、EIGRP can be used only as the PE-CE routing protocol if the PE and CE routers are in the same AS
  • B、Other EIGRP AS routes are automatically advertised to the CE router and do not require a redistribution configuration command to be configured
  • C、Unlike other routing protocols that are used between PE and CE routers, EIGRP supports backdoor links
  • D、Configure of the VPN is only required on the PE router

正确答案:D

第5题：

How does route poisoning work with holddown timers to prevent routing loops?（）

  • A、Information learned from one source is not distributed back to that source.
  • B、Routing updates from the poisoned source are ignored until a holddown timer expires.
  • C、Failed routes are advertised with infinite metrics.
  • D、New routing updates are ignored until the network has converged.
  • E、A route is marked as unavailable when its time-to-live is exceeded.

正确答案:C

第6题：

The TTL field was originally designed to hold a time stamp, which was decremented by each visited router. The datagram was ( ) when the value became zero. However, for this scheme, all the machines must have synchronized clocks and must know how long it takes for a datagram to go from one machine to another. Today, this field is used mostly to control the ( ) number of hops (routers) visited by the datagram. When a source host sends the datagram, it (请作答此空) a number in this field. Each router that processes the datagram decrements this number by 1. If this value, after being decremented, is zero, the router discards the datagram.This field is needed because routing tables in the Internet can become corrupted.A datagram may travel between two or more routers for a long time without ever getting delivered to the ( ).This field limits the ( ) of a datagram.

A.controls
B.transmits
C.stores
D.receives

答案：C
解析：
TTL的基本概念。

第7题：

The TTL field was originally designed to hold a time stamp, which was decremented by each visited router. The datagram was ( ) when the value became zero. However, for this scheme, all the machines must have synchronized clocks and must know how long it takes for a datagram to go from one machine to another. Today, this field is used mostly to control the ( ) number of hops (routers) visited by the datagram. When a source host sends the datagram, it ( ) a number in this field. Each router that processes the datagram decrements this number by 1. If this value, after being decremented, is zero, the router discards the datagram.This field is needed because routing tables in the Internet can become corrupted.A datagram may travel between two or more routers for a long time without ever getting delivered to the ( ).This field limits the (请作答此空) of a datagram.

A.lifetime
B.moving time
C.receiving time
D.transmitting time

答案：A
解析：
TTL的基本概念。

第8题：

How does route poisoning work with holddown timers to prevent routing loops?()

A. Information learned from one source is not distributed back to that source.

B. Routing updates from the poisoned source are ignored until a holddown timer expires.

C. Failed routes are advertised with infinite metrics.

D. New routing updates are ignored until the network has converged.

E. A route is marked as unavailable when its time-to-live is exceeded.


参考答案：C

第9题：

What is the first step that you would use Cisco Product Advisor for when selecting a router for an Edge solution？（）

  • A、 determine types of protocols to be supported
  • B、 determine the environment in which the router will be used
  • C、 select the number of WAN ports required
  • D、 select the number of LAN ports required

正确答案:B

第10题：

What are two valid match criteria for a routing policy?（）

  • A、OSPF area ID
  • B、prefix list
  • C、port
  • D、time-to-live (TTL)

正确答案:A,B

更多相关问题
相关内容