2021儿科护理专业实践能力真题模拟05-18

1、 Refer to the exhibit. The Hamilton Hair Emporium was having difficulty hearing during conference calls. This configuration adjustment was made, and now the company is experiencing sound distortion. What is the cause?（） （单选题）

A. The gain functionality applies to outbound audio packets. Distortion is created when an external participant causes echo. 

B. The distortion is unrelated to the gain functionality. Rather, it is a result of the company trying to maintain too many conference calls at one time. 

C. This functionality cannot discriminate between a local VoIP source that requires volume gain and a CO-powered PSTN source that does not require volume gain. 

D. This functionality cannot discriminate between a remote VoIP or Foreign Exchange Office source that requires volume gain, and a remote VoIP or IP phone that does not require volume gain. 

试题答案：D

2、麻疹传染性最强的时期是指（　　）。（单选题）

A. 恢复期

B. 潜伏期

C. 出疹期

D. 出疹前5天至出疹后5天

E. 出现并发症时

试题答案：D

3、患儿男，7岁，主诉发热、咳嗽、乏力、心悸半天，突然晕厥、意识丧失伴抽搐急诊入院。体检面色苍白，昏迷，心率60次/分，第一心音低钝，肺部、腹部未见异常。心电图为三度AVB，既往体健。 该患儿最可能的临床诊断是（）（单选题）

A. 风湿性心脏病

B. 病毒性心肌炎（重型）

C. 先天性心脏病

D. 扩张型心肌病

E. 先天性房室传导阻滞

试题答案：B

4、Which two of the following statements are true about HSRP load sharing?（） (Choose two)（多选题）

A. It is achieved by using more than one HSRP group.

B. It is done in regards to either round robin or weight basis.

C. It is used to offload the active router in a certain HSRP group.

D. Single group HSRP is used to achieve more efficient link utilization.

E. The return traffic is influenced by HSRP load sharing configuration.

试题答案：A,C

5、Which two statements about the Wi-Fi Multimedia （WMM） standard are true？（）（多选题）

A.  Lower-priority traffic is assigned short interframe wait-timers to allow higher-priority traffic access to the wireless network first.

B.  Packets that are not assigned to a specific access category are categorized by default as the background access category.

C.  The WMM standard was implemented after the 802.11e standard was approved to provide support for non 802.11e devices.

D.  WMM is a Wi-Fi Alliance standard that was implemented before the 802.11e standard was approved.

E.  WMM uses Enhanced DCF （EDCF） to stipulate fixed and random wait times for the different access classes.

试题答案：D,E