https的默认TCP端口号是 A: 80 B: 21 C: 110 D: 443

下面提供HTTPS服务的默认TCP端口号是()。 A: 21 B: 443 C: 23 D: 80

由曲线[imgwidth="156"height="53"src="https://p.ananas.chaoxing.com/star3/origin/00e346dd386ef544f5052fb5c90e1372.png"]、[imgwidth="37"height="19"src="https://p.ananas.chaoxing.com/star3/origin/8fad2786802119320b27fc6647707e0d.png"]和[imgwidth="35"height="21"src="https://p.ananas.chaoxing.com/star3/origin/27d8820aa177e50656e6ffa3c6225a67.png"]围成的平面图形绕[imgwidth="15"height="17"src="https://p.ananas.chaoxing.com/star3/origin/b3048d8c2bbe74ff01f7d3c8915bfdef.png"]轴旋转一周所得旋转体的体积[imgwidth="28"height="19"src="https://p.ananas.chaoxing.com/star3/origin/c9d9123939953c49b1e9b6492e79f835.png"](). A: imgwidth="55"height="21"src="https://p.ananas.chaoxing.com/star3/origin/3bcbb56de7b78a2ff7eff984ee56642e.png">; B: ; C: ; D: .

客户端数据包由服务器接收。数据包的目标端口号为 21。客户端请求什么服务？ A: FTP B: IMAP C: DHCP D: HTTPS

以下有关程序/服务对应的端口正确的是 A: http 80 B: ftp 20 ，21 C: https 445 D: smb 445

设[imgwidth="71"height="25"src="https://p.ananas.chaoxing.com/star3/origin/75ffa9533e6ab79bc0cfb8fd5a03fb9e.png"],则[imgwidth="39"height="23"src="https://p.ananas.chaoxing.com/star3/origin/424d5c9d46833a5ab8942dcd75ce5a8c.png"]在[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/9ee84cb4b1771fa6c046eaa6c45bb946.png"]上的平均值为(). A: imgwidth="16"height="45"src="https://p.ananas.chaoxing.com/star3/origin/f163ea87a82b79497196f437c30b8320.png">; B: ; C: ; D: .

曲线[imgwidth="59"height="27"src="https://p.ananas.chaoxing.com/star3/origin/3cc99583084ffcc89a960073fcd99335.png"]与直线[imgwidth="77"height="41"src="https://p.ananas.chaoxing.com/star3/origin/9b130a364a2754b18314b4d1622ea3a4.png"]及[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/8951f704839e2c8e32609744580906d7.png"]所围成的区域的面积S(). A: imgwidth="37"height="41"src="https://p.ananas.chaoxing.com/star3/origin/cf2bafeed7198528d3b7c952a5092ab8.png" B: C: D:

由曲线[imgwidth="53"height="24"src="https://p.ananas.chaoxing.com/star3/origin/db4fa8875f945a05a5a4e1267be38b73.png"]、[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/8951f704839e2c8e32609744580906d7.png"]和[imgwidth="37"height="19"src="https://p.ananas.chaoxing.com/star3/origin/e2a3aace4ad8b56317c5010b305a51ae.png"]围成的平面图形绕[imgwidth="15"height="17"src="https://p.ananas.chaoxing.com/star3/origin/b3048d8c2bbe74ff01f7d3c8915bfdef.png"]轴旋转一周所得旋转体的体积[imgwidth="28"height="19"src="https://p.ananas.chaoxing.com/star3/origin/c9d9123939953c49b1e9b6492e79f835.png"](). A: imgwidth="35"height="41"src="https://p.ananas.chaoxing.com/star3/origin/2d760dcf355fa1cf2500875442f19085.png">; B: ; C: ; D: .

https://zhibo.chaoxing.com/7000123727226510 A: https://zhibo.chaoxing.com/7000123727226510 B: https://zhibo.chaoxing.com/7000123727226510

网易公开课的网址是: A: https://open.163.com/ B: https://opens.163.com/ C: https://oppen.163.com/ D: https://opeen.163.com/