Question and answers 100% correct
2025/2026
True or False:
A user requests a Web page that consists of some text and three images. For this page, the client will
send one request message and receive four response messages, assuming a non-persistent connection. -
correct answer ✔False
True or False:
Store-and-forward transmission means the packet switch must receive the entire packet before it can
begin to transmit the first bit of the packet onto the outbound link. - correct answer ✔True
True or False:
A port number field in the IP header is used to identify which application to demultiplex the packet to. -
correct answer ✔False
True or False:
Error control may be implemented at more than one layer of the protocol stack. - correct answer
✔True
True or False:
An IP address is a physical hardware address that a network interface uses to identify itself. - correct
answer ✔False
A(n) interface _________is assigned an IP address.
process port/ host /machine /socket / interface - correct answer ✔interface
, In a(n) ____________ protocol, the sender is allowed to send multiple packets without waiting for
acknowledgements.
pipelining /stop-and-wait /reliable data transfer store-and-forward - correct answer ✔pipelining
The network ______________ consist of mesh of interconnected routers.
cloud /core /ISP /autonomous system - correct answer ✔core
A process sends message into, and receives messages from, the network through a software interface
called a(n)
socket /link /queue /interface - correct answer ✔socket
At each layer, a packet has two types of fields: a header field and a(n) ________________ field.
contents /payload /data /body - correct answer ✔payload
The transmission unit at the transport layer is called a(n) ____________.
datagram /frame /message /packet /segment - correct answer ✔segment
The job of delivering the data in a transport-layer segment to the correct socket is called ___________.
forwarding /routing /demultiplexing /multiplexing - correct answer ✔demultiplexing
__________ is a helper protocol that supports IP with facilities for error reporting and simple queries.
ifconfig /ICMP /ping /traceroute - correct answer ✔ICMP
______________ tests whether a given IP address is reachable.
tcpdump /ping /ifconfig /traceroute /wireshark - correct answer ✔ping