PGCP-ITISSCMCE (CCE Modules Exam)•48 Questions

Fundamentals of Computer Networks Practice MCQs

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Internetworking and Network Models

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Fundamentals of Computer Networks Free MCQs

A laboratory shares a printer and files through a switch while its Internet connection is unavailable. Which statement best describes this situation?

Which component gives a computer its Ethernet connection and handles both signalling and local frame transmission?

A phone communicates with a nearby Bluetooth headset. Which network category best fits this scope?

Which arrangement is a client–server example?

Which description correctly identifies full-duplex communication?

Which information does a basic Layer 2 Ethernet switch use to select the outgoing port for a known unicast frame?

Two separate IP networks must exchange packets. Which device function directly provides the required interconnection?

Which sequence lists OSI layers from the lowest to the highest?

An IP packet is placed inside an Ethernet unit with a MAC header and an FCS trailer. What is the resulting unit called?

Which pair contains only transport-layer protocols?

In the four-layer TCP/IP model, which layer covers the responsibilities of the OSI application, presentation and session layers?

A network design uses electrical signal levels and bit timing to represent data on a cable. Which OSI layer directly describes these functions?

A link is rated at 100 Mbps, but a file transfer achieves 70 Mbps. Which interpretation is correct?

Ignoring overhead, how many million bytes per second correspond to a 100 Mbps link?

Four devices require a full mesh of bidirectional point-to-point links. How many links are needed?

Eight computers connect to a hub. One sends a unicast Ethernet frame to another. What normally happens?

Eight hosts use eight active ports of one basic switch, all in a single VLAN. Using the conventional port-based collision-domain count, what does the arrangement have?

Why can a hub-based Ethernet network be described as a physical star and a logical bus?

Computer A sends to a server on another subnet through its default gateway. On the first Ethernet link, which destinations should be used?

A host knows the IPv4 address of its local next hop but needs the Ethernet address for frame delivery. Which mechanism supplies that mapping?

Which pairing correctly distinguishes the network and transport layers?

Two systems receive the same bits but interpret the text differently because they use incompatible character representations. Which OSI responsibility addresses this problem?

A long application operation can resume from its last agreed checkpoint after interruption. Which OSI responsibility best matches this feature?

An Ethernet receiver finds that the FCS does not match the received frame. Which conclusion is justified?

Which pairing correctly describes the IEEE 802 data-link sublayers?

Which choice contains application-layer protocols even though they help with addressing?

How is an ICMP message carried in the protocol stack?

An application sends TCP data over IP over Ethernet. Which sequence describes encapsulation?

An IP packet contains a TCP segment. What is the payload of the IP packet in this case?

Which change converts the four-layer TCP/IP description into the common five-layer Internet teaching model?

Which statement correctly distinguishes a service, an interface and a protocol?

A switch forwards frames using MAC addresses and also routes packets between IP networks. How should it be classified?

Which description of TCP reliability is correct?

A live application prefers continuing with fresh data rather than waiting for late retransmissions. Why might it choose UDP?

Which example distinguishes flow control from congestion control?

A user reaches a service by IP address but cannot resolve its hostname. Which function is most directly implicated?

An IPv4 packet crosses a router between two Ethernet LANs. Assume ordinary forwarding with no NAT, tunnelling or proxying. Which statement is correct?

A sender and receiver use TCP over connectionless IP. Why is this combination consistent?

Two clients connect to the same server IP and the same server TCP port. Which information distinguishes their TCP connections?

A browser request travels over Ethernet on one link and PPP on another. What does this demonstrate?

A Layer 2 switch does not yet know the destination MAC of a unicast frame. All eligible ports are in one VLAN. Which action is expected?

A single-VLAN switch uses full-duplex links to six hosts. Which statement correctly combines its collision and broadcast behaviour?

A question states only that a “gateway” is involved and asks for its OSI layer. Which clarification is needed for a reliable answer?

Which statement about encryption and the OSI model is the most accurate?

A packet is forwarded by an ordinary router on the way to a web server. Which interpretation of peer-layer communication is correct?

A diagram places ARP next to IP, while another places it in the TCP/IP link layer. Which statement remains correct regardless of that diagram convention?

Which statement is NOT correct about layered network communication?

A resumable application checkpoints after each 50 completed records. It is interrupted after record 120. Which statement correctly describes recovery from its last checkpoint?

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