Data Communication and Networks (UGC/NET)
Comprehensive coverage of networking protocols including TCP/IP stack, DNS, DHCP, ARP, ICMP, UDP, and PPP with focus on protocol headers and message formats for UGC/NET exam preparation.
Questions
The term in IP network, which refers to connection of two or more subnets together, is called as _______________.
- address
- network
- neighbor
- interface
- packet
The _____________ of internet layer of TCP/IP is a routable protocol that addresses route fragments and recollects packets.
- Address Resolution Protocol
- Internet Protocol
- ICMP
- IGMP
- RFC
The _______________ field of Common Part Convergence Sublayer consists of a 3-byte LLC header with the format DSAP-SSAP-Ctrl.
- CPI
- Length
- CRC
- LLC
- OUI
The flag that asks recursive resolution in DNS message format bit that signals to the name server is ______________.
- TC
- AA
- RD
- RA
- Zero
The ___________ bit field in TCP segment format indicates that the urgent pointer field is significant in this segment.
- ACK
- URG
- RST
- SYN
- FIN
The ____________ field in BOOTP message format is a random number used to match this boot request with the response it generates.
- Length
- Transaction ID
- Seconds
- Flags
- Hops
The _____________ domain name is used with a website name for informational sites in internet environment.
- com
- edu
- gov
- info
- jobs
Which address space in ARP packet specifies the length of the hardware addresses in the packet?
- Protocol address length
- Hardware address space
- Protocol address space
- Hardware address length
- Operation code
The value in ICMP header code field that specifies that the message is received from an intermediate router and means that the router did not have the buffer space needed to queue the datagram, is _____________.
- 3 (destination unreachable)
- 4 (source quench)
- 5 (redirect)
- 11 (time exceeded)
- 9 (router advertisement)
The _____________ category of DHCP message type gives response from a server to a DHCPDISCOVER, offering IP address and other parameters.
- DHCPDISCOVER
- DHCPOFFER
- DHCPACK
- DHCPNACK
- DHCPRELEASE
The _________ field in UDP datagram format contains the source and destination IP addresses and the protocol as well as the UDP length.
- Source port
- Destination port
- Checksum
- Length
- Data
Which type of domain name server loads zone information from disk and has authority over the zone?
- Secondary
- Primary
- Caching-only
- Name
- Type
The field in IP datagram format which is a 32-bit IP address of the host sending this datagram, is _________________.
- VERS
- HLEN
- Service Type
- Source IP Address
- Destination IP Address
The ______________ field of Point-to-Point encapsulation can be padded with an arbitrary number of octets up to Maximum Receive Unit.
- Protocol
- Information
- Padding
- Link Control Protocol
- Network Control Protocol
The ____________ bytes in window principle applied to TCP indicate that the bytes are transmitted and have been acknowledged.
- B
- A
- C
- D
- E