Chapter 5 · MCQ Read Mode

Concept of Computer Network and Network Security System

How many layers does the OSI reference model have?

The TCP/IP model combines the OSI Session, Presentation, and Application layers into a single:

Which networking device operates at the physical layer and simply broadcasts data to all ports?

A switch forwards frames based on the:

A router forwards packets between different networks based on the:

Which transmission medium offers the highest bandwidth and immunity to electromagnetic interference?

Infrared transmission is best suited for:

A protocol that becomes a standard purely through widespread common use (without formal approval) is called a:

Which layer is present in the OSI model but merged into the Application layer in the TCP/IP model?

A bridge operates at which layer of the OSI model?

Which error detection technique uses polynomial division and is considered the most powerful?

Which technique can both detect AND correct single-bit errors?

In stop-and-wait flow control, the sender:

CSMA/CD is primarily used in:

Wireless LANs use CSMA/CA instead of CSMA/CD mainly because:

ARP is used to resolve a(n):

IEEE 802.5 defines which LAN technology?

In channelization access methods, TDMA divides the shared channel by:

PPP (Point-to-Point Protocol) is mainly used to:

A MAC address is:

Which IP address class is reserved specifically for multicast addresses?

Subnetting is used to:

RIP (Routing Information Protocol) is an example of:

OSPF determines the shortest path using:

BGP (Border Gateway Protocol) is classified as a:

Which protocol is used to resolve a MAC address into a corresponding IP address?

The 'ping' utility relies on which protocol?

How many bits does an IPv6 address use?

Which mechanism allows IPv4 and IPv6 networks to coexist by encapsulating IPv6 packets inside IPv4 packets?

Delivering a packet to a single specific destination is called:

A socket is uniquely identified by the combination of:

Which transport protocol is connection-oriented and provides reliable delivery?

UDP is generally preferred over TCP for applications like live streaming because:

TCP connection establishment uses:

TCP connection release typically uses:

Flow control at the transport layer commonly uses which mechanism?

Combining data from multiple applications into one transmission stream using port numbers is called:

Which congestion control mechanism increases the sending rate exponentially at the start of a connection?

AIMD stands for:

Which algorithm is commonly used to shape/smooth bursty traffic to a steady, controlled rate?

HTTPS differs from HTTP mainly by adding:

FTP uses how many connections to transfer a file?

Which protocol is used to send email from a client to a mail server (or between mail servers)?

DNS primarily functions to:

A P2P (peer-to-peer) application is characterized by:

Which tool is used to capture and analyze network packets in detail?

SNMP is primarily used for:

WinSCP is best described as a:

Cisco Packet Tracer is mainly used to:

A mail client retrieving/downloading messages from a mail server typically uses:

The CIA triad in computer security stands for:

Eavesdropping on network traffic without altering it is an example of a:

A Denial of Service (DoS) attack is classified as a(n):

In symmetric-key cryptography:

RSA's security is based on the difficulty of:

A digital signature is created by encrypting a message digest with the sender's:

PGP is primarily used to secure:

SSL/TLS is the underlying security mechanism for which widely used protocol?

IPsec's tunnel mode differs from transport mode in that tunnel mode:

WEP is considered weak mainly because:

What condition indicates a circular queue is FULL (size = N, front and rear start at 0)?

Class P problems are solvable in polynomial time by which machine?

The thesis that states any algorithm computable by a person can be computed by a Turing Machine is:

A Finite Automaton (FA) recognises languages described by which grammar type?

The key characteristic of a Universal Turing Machine (UTM) is:

A language is Turing-recognisable (recursively enumerable) if:

A Pushdown Automaton (PDA) that has at most one possible move for any input symbol and stack symbol is called:

The cardinality of the power set of a set with 4 elements, |P(1,2,3,4)|, is:

What grammar notation uses meta-symbols to formally define the syntax of programming languages?