Computer networking 2022-2023

Switching fabric transfers datagram from input port to appropriate output port. True. False.

TCP provides minimum delay, throughput and security guarantees. True. False.

IPv4 uses four bytes to specify host address while IPv6 uses six bytes. True. False.

Link frame is created by appending the link layer header to transport segment. True. False.

Seawater itself is unguided transmission medium. True. False.

IP address is conventionally expressed in hexadecimal notation. True. False.

User datagram protocol guarantees message delivery and prevents errors. True. False.

Twisted pair, coaxial cable and optical fiber belong to guided transmission media. True. False.

Self-scalability is an important property of P2P network application architecture. True. False.

The forward table of router is stored in the memory of its input port. True. False.

Every host uses transport layer services must have a unique port number. True. False.

Multimedia applications can tolerate some amount of data loss. True. False.

DNS iterative query puts heavy load at the upper levels of DNS servers hierarchy. True. False.

Cookies maintain the state between mail agent and mail server. True. False.

In NAT, just one IP address needed from provider ISP for all host in local network. True. False.

Routing algorithm determines local forwarding at a router. True. False.

Human communications needs 2-way handshake procedure to setup a connection. True. False.

In tunneling, IPv6 datagram is carried as payload in IPv4 datagram among IPv4 routers. True. False.

HTTP protocol is implemented in host and router. True. False.

In client-server architecture, clients are intermittently connected by their permanent IPs. True. False.

In CIDR, x means the number of bits in subnet portion of address format: (a.b.c.d/x). True. False.

Connectionless service must first setup connection between two involved hosts. True. False.

The IMAP is used only to pull emails from mail server. True. False.

The Discover and Offer broadcast messages of DHCP are mandatory. True. False.

A host can be client and server at the same time in P2P architecture. True. False.

Pv4 allows datagram fragmentation and variable length of datagram header. True. False.

Chrome, Skype and WhatsApp are examples of application layer protocols. True. False.

In non persistent HTTP, at most, one object is sent over a TCP connection and then the connection is closed, so downloading multiple objects require multiple connection. True. False.