单选题What is the most common cause of network congestion？（）A aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switchesB speed mismatches when moving from a low-speed LAN environ

题目

单选题

What is the most common cause of network congestion？（）

aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches

speed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment

flapping Ethernet interfaces caused by misconfigured LAN interfaces

flapping serial interfaces caused by misconfigured WAN interfaces

speed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment

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相似问题和答案

第1题：

When you use the ping command to send ICMP messages across a network, what's the most common request/reply pair you'll see? (Select one answer choice)

A．Echo request and Echo reply

B．ICMP hold and ICMP send

C．ICMP request and ICMP reply

D．Echo off and Echo on

E．None of the above

正确答案：A
解析：Explanation:TheICMPprotocolusesEchorequestandEchoreplywiththePingcommand.ThePINGutilityisthemostcommonlyusedmessagetoverifyconnectivitytoaremotedevicewithinthenetwork.

第2题：

The error messages given by a C compiler show the message text, the most common cause of the error, and a suggestion for(73)the error.

A．updating

B．fixing

C．changing

D．Editing

正确答案：B
解析：译文：C编译器给出的错误信息说明了该错误最常见的原因以及纠正的办法。

第3题：

●The error messages given by a C compiler show the message text,the most common cause of the error,and a suggestion for (73) the error.

(73) A．upfsying

B．fixing

C．changing

D．Editing

正确答案：B
【解析】译文：C编程器给出的错误信息说明了改错误最常见的原因以及纠正方法。

第4题：

You are experiencing intermittent issues relating to congestion with your network.What are the possible causes of congestion on a LAN?（）

A、A broadcast domain with too many hosts.
B、Full duplex operation.
C、Broadcast storms.
D、Multicasting.
E、Network Segmentation.
F、Low bandwidth.

正确答案:A,C,F

第5题：

The display screen is the most common (72) device used to show you what the computer is doing．

A．input

B．printing

C．output

D．electronic

正确答案：C
解析：显示器是最常见的输出设备，用来显示你的计算机正在做的工作。

第6题：

You are experiencing intermittent issues relating to congestion within the Ezonexam network. What are the possible causes of congestion on this LAN? (Choose all that apply)

A. A broadcast domain with too many hosts.

B. Full duplex operation.

C. Broadcast storms.

D. Multicasting.

E. Network Segmentation.

F. Low bandwidth.

正确答案：ACF
A,C,F 解析：Explanation:
A LAN segment with too many hosts can mean that there are a large number of stations contending for bandwidth. It can also mean an increase in the number of collisions on the segment, which can cause further congestion issues.

Broadcast storms are the result of a large number of broadcasts sent over the LAN. Because each station listens to these broadcast messages, congestion can occur quickly. Finally, low bandwidth can simply mean that the LAN can not process all of the LAN traffic that is being sent. This can mean that TCP sessions are retransmitted, which can lead to additional congestion.

Incorrect Answers:
B. This can alleviate congestion, as data can be sent and received at the same time. In addition, collisions are not possible in a full duplex LAN.

D. Multicasting can actually alleviate congestion issues, as single streams of information can reach multiple hosts at the same time, instead of using a series of point to point
connections.

E. Segmentation breaks up a large LAN into multiple, smaller LANS. This will mean fewer hosts per broadcast domain.

第7题：

Your ERX Edge Router is constantly going to a boot prompt.What is the most likely cause for this condition?()

A.A

B.B

C.C

D.D

参考答案：D

第8题：

Radio, telephone and press ____ of conveying news and information.

A.are the most three common means

B.are the most common three means

C.are the three most common means

D.are three the most common means

答案：C

第9题：

______ is the most common cause of ice formation．

A.The freezing of raindrops on contact with the vessel's structure

B.Drastic fall in ambient temperature

C.The deposit of water droplets on the vessel's structure

D.Snowfall

正确答案：C

第10题：

What is the most common mode for a firewall？（）

A、 routed mode
B、 context mode
C、 bridged mode
D、 transparent mode
E、 full security mode

正确答案:A

What is the most common cause of network congestion？（）

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