Question

12. The combination of the source and destination IP addresses and the source and destination port numbers is known as a socket. What is a socket used for? 13. Label the following port number ranges. _0 to 1023 1024 to 49151 49152 to 65535 14. What DOS command can be used to see which active TCP connections are open and wing on a networked host? 15. Why is dividing application data into segments necessary 16. Labelcach of the following delivery method characteristics as either TCP or UDP Less Overhead Fast Transmission Requirements No Acknowledgment of Receipt Guaranteed Delivery Ordered Delivery Connectionless Sequenced Message Segments No ordered Delivery Flow Control Session Establishment Subnetting an IPv4 Network 17. Define subnetting 18. What is the formula for calculating the number of subnets? 19. What device is required to forward traffic between different networks? 20. What command would you use to give a Gigabit interface the IP address and subnet mask 192.168.1.1 255.255.255.0? 21. Enter the correct network address in binary and decimal format. Host Address in biary 11000000101010000110100110001001

Answer 1

12. The socket is used to specify or configure the connectivity For ex. In following JDBC thread, jndi:[email protected]:1521/localuser - 128.0.9.1:1521 is used to specify the connectivity configuration for the JDBC thread.

13.PFB the list of port numbers:

Port Number ---
Description
1   TCP Port Service Multiplexer (TCPMUX)
5   Remote Job Entry (RJE)
7   ECHO
18   Message Send Protocol (MSP)
20   FTP -- Data
21   FTP -- Control
22   SSH Remote Login Protocol
23   Telnet
25   Simple Mail Transfer Protocol (SMTP)
29   MSG ICP
37   Time
42   Host Name Server (Nameserv)
43   WhoIs
49   Login Host Protocol (Login)
53   Domain Name System (DNS)
69   Trivial File Transfer Protocol (TFTP)
70   Gopher Services
79   Finger
80   HTTP
103   X.400 Standard
108   SNA Gateway Access Server
109   POP2
110   POP3
115   Simple File Transfer Protocol (SFTP)
118   SQL Services
119   Newsgroup (NNTP)
137   NetBIOS Name Service
139   NetBIOS Datagram Service
143   Interim Mail Access Protocol (IMAP)
150   NetBIOS Session Service
156   SQL Server
161   SNMP
179   Border Gateway Protocol (BGP)
190   Gateway Access Control Protocol (GACP)
194   Internet Relay Chat (IRC)
197   Directory Location Service (DLS)
389   Lightweight Directory Access Protocol (LDAP)
396   Novell Netware over IP
443   HTTPS
444   Simple Network Paging Protocol (SNPP)
445   Microsoft-DS
458   Apple QuickTime
546   DHCP Client
547   DHCP Server
563   SNEWS
569   MSN
1080   Socks

2.

Port Number   Service   Brief Description of Use
----------------------------------------------------------------------
1024   Reserved   Reserved for future use
1025   Blackjack   Network version of blackjack
1026   CAP   Calendar access protocol
1027   Exosee   ExoSee
1029   Solidmux   Solid Mux Server
1102   Adobe 1   Adobe Server 1
1103   Adobe 2   Adobe Server 2
44553   Rbr-debug   REALBasic Remote Debug
46999   Mediabox   MediaBox Server
47557   Dbbrowse   Databeam Corporation
48620–49150   Unassigned   These ports have not been registered
49151   Reserved   Reserved for future use

3. 49152 - 65535 : Private ports.

14.netstat

15.For the ease of processing, storage and efficient way.

16.TCP, UDP, TCP, TCP, UDP, UDP, UDP, TCP,TCP.

17.A process of diving a big or complex network into small e prototypes is known as sub netting which is used for making a network to get simpler and more efficient.

18.2^y -2 where y is number of zeros n subnet mask.

19.Router.