Inter-Process Communication

Question 1

Inter-process communication allows for……….

Answer 1

the exchange of data between multiple processes (or threads within processes)

Question 2

Give four reasons for using IPC

Answer 2

Sharing data
Accessing remote services
Computational efficiency
Distributed applications

Question 3

What is the missing word:

IPC is __________ when communication from one process to a single other process e.g socket communication

Answer 3

Unicast

Question 4

What is the missing word:

IPC is __________ when communication from one process to a group of processes e.g publish/subscribe message model

Answer 4

Multicast

Question 5

What does TCP stand for?

Answer 5

Transmission Control Protocol

Question 6

Name four applications which rely on TCP

Answer 6

Web browser / server uses HTTP to send request / replies via TCP
Telnet (terminal emulation)
FTP (file transfer protocol – used for file exchange)
SMTP (simple mail transfer protocol).

Question 7

What does UDP stand for?

Answer 7

User Datagram Protocol

Question 8

Name four applications that use UDP?

Answer 8

DNS, the Domain Name System; used to lookup domain names / ip addresses. DNS sends a UDP packet to a DNS server to look up the domain and the domain’s IP address is returned in another UDP packet.
SNMP (Simple Network Management Protocol)
DHCP (Dynamic Host Configuration Protocol)
Voice and video applications normally use UDP

Question 9

What is the missing word:

Message destinations are specified as ___________

Answer 9

socket addresses