Answer Posted / sunilbaglur

the differnt types of port nos and its uses are

http 80/tcp World Wide Web HTTP
https 443/tcp http protocol over TLS/SSL
smtp 25/tcp Simple Mail Transfer
snmp 161/tcp SNMP
ftp-data 20/tcp File Transfer [Default Data]
ftp 21/tcp File Transfer [Control]
ftps-data 989/tcp ftp protocol, data, over TLS/SS
ftps 990/tcp ftp protocol, control, over
TLS/SSL
telnet 23/tcp Telnet
telnets 992/tcp telnet protocol over TLS/SSL
nfs 2049/tcp Network File System - Sun
Microsystems
pop2 109/tcp Post Office Protocol - Version 2
pop3 110/tcp Post Office Protocol - Version 3
imap 143/tcp Internet Message Access Protocol
imaps 993/tcp imap4 protocol over TLS/SSL
tftp 69/tcp Trivial File Transfer
tftps 3713/tcp TFTP over TLS
domain 53/tcp Domain Name Server
nntp 119/tcp Network News Transfer Protocol
dhcpv6-client 546/tcp DHCPv6 Client
dhcpv6-server 547/tcp DHCPv6 Server
ldap 389/tcp Lightweight Directory Access
Protocol
sftp 115/tcp Simple File Transfer Protocol
ssh 22/tcp SSH Remote Login Protocol
msft-gc 3268/tcp Microsoft Global Catalog
msft-gc-ssl 3269/tcp Microsoft Global Catalog with
LDAP/SSL

Explain about tcp&ip and osi model.

1090

---

How do I unblock a port?

1069

---

What is the data unit of "transport layer"?

986

---

Why is port 139 open?

945

---

Is netbios needed?

1016

---

at which layer of osi model does segmentation of a data stream happen?

1139

---

What is the j std 001?

990

---

What is the use of predictive encoding?

1110

---

Explain what is the full form of osi and tcp/ip model?

1103

---

Whats frequency of waves?

1073

---

How will my computer get its ip address?

1015

---

What is public ip?

1002

---

Is port 80 secure?

994

---

Is port 80 open on my network?

995

---

Does ip protect data on the network?

1034

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