CISCOCCNA认证考试640-810题库原题

2024-05-02

CISCOCCNA认证考试640-810题库原题（通用3篇）

篇1：CISCOCCNA认证考试640-810题库原题

your boss at testking asks you about half-duplex and full-duplex ethernet. what are unique for halfduplex ethernet? (choose two)

a. half-duplex ethernet operates in a shared collision domain.

b. half-duplex ethernet operates in a private collision domain.

c. half-duplex ethernet has higher effective throughput.

d. half-duplex ethernet has lower effective throughput.

e. half-duplex ethernet operates in a private broadcast domain.

answer: a d

explanation:

a single device could not be sending a frame and receiving a frame at the same time because it would mean that a collision was occurring. so, devices simply chose not to send a frame while receiving a frame. that logic is called half-duplex logic.

ethernet switches allow multiple frames to be sent over different ports at the same time. additionally, if only one device is connected to a switch port, there is never a possibility that a collision could occur. so, lan switches with only one device cabled to each port of the switch allow the use of full-duplex operation. full

duplex means that an ethernet card can send and receive concurrently.

篇2：CISCOCCNA认证考试640-810题库原题

a. 120 is the udp port for forwarding traffic and 3 is the number of hops.

b. 120 is the administrative distance and 3 is the metric for that route.

c. 120 is the bandwidth of the link and 3 is the routing process number.

d. 120 is the value of the update timer and 3 is the number of updates received for that route.

answer: b

explanation:

to decide which route to use, ios uses a concept called administrative distance. administrative distance is a number that denotes how believable an entire routing protocol is on a single router. the lower the number, the better, or more believable the routing protocol.

route type administrative distance

connected 0

igrp 100