Description : In IPv4, what is the value of the total length field in bytes if the header is 28 bytes and the data field is 400bytes? A) 428 B) 407 C) 107 D) 427
Last Answer : 428
Description : In an IPv4 datagram, the M bit is 0, the value of HLEN is 10, the value of total length is 400 and the fragment offset value is 300. The position of the datagram, the sequence numbers of the ... 2789 b. First fragment, 2400 and 2759 c. Last fragment, 2400 and 2759 d. Middle fragment, 300 and 689
Last Answer : c. Last fragment, 2400 and 2759
Description : In IPv4 header, an HLEN value of decimal 10 means_______. A) there are 10bytes ofoptions B) there are 40bytes ofoptions C) there are 10bytes inthe header D) thereare 40 bytes in the header
Last Answer : thereare 40 bytes in the header
Description : In IPv4 header, an HLEN value of decimal 10 means _______ A. there are 10 bytes of options B. there are 40 bytes of options C. there are 10 bytes in the header D. there are 40 bytes in the header
Last Answer : D. there are 40 bytes in the header
Description : The IPv4 header size _______ A. is 20 to 60 bytes long B. is always 20 bytes long C. is always 60 bytes long D. depends on the MTU
Last Answer : A. is 20 to 60 bytes long
Description : Header of datagram in IPv4 has _________ a) 0 to 20 bytes b) 20 to 40 bytes c) 20 to 60 bytes d) 20 to 80 bytes
Last Answer : c) 20 to 60 bytes
Description : In IPv6, when a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.
Last Answer : priority
Description : Identify the class of the following IPv4 address: 191.1.2.3.
Last Answer : B
Description : In IPv4, what is the lengthof the data field given an HLEN value of 12 and total length value of 40,000? A) 39,988 B) 40,012 C) 40,048 D) 39,952
Last Answer : 39,952
Description : The maximum size of the data that the application layer can pass on to the TCP layer below is ......... (1) 216 bytes (2) 216 bytes + TCP header length (3) 216 bytes - TCP header length (4) 215 bytes
Last Answer : Answer: Marks to all
Description : In IPv4, service type of service in header field, first 3 bits are called ______ a) Type of service b) Code bits c) Sync bits d) Precedence bits
Last Answer : d) Precedence bits
Description : In version field of IPv4 header, when machine is using some other version of IPv4 then datagram is __________ a) Discarded b) Accepted c) Interpreted d) Interpreted incorrectly
Last Answer : a) Discarded
Description : In IPv4 header, the field is needed to allow the destination host to determine which datagram a newly arrived fragment belongs to. (A) identification (B) fragment offset (C) time to live (D) header checksum
Last Answer : (A) identification
Description : The maximum length (in bytes) of an IPv4 datagram is? A. 32 B. 1024 C. 65535 D. 512
Last Answer : C. 65535
Description : n IPv4,an HLEN value ofdecimal10 means _______. A) there are 10bytes ofoptions B) there are 40bytes ofoptions C) there are 40bytes inthe header D) noneof the above
Last Answer : there are 40bytes inthe header
Description : In IPv4, if the fragment offset hasa value of 100, it means that _______. A) thedatagram has notbeen fragmented B) thedatagram is 100 bytes in size C) thefirst byte of the datagram is byte100 D) the first byteof the datagram is byte800
Last Answer : the first byteof the datagram is byte800
Description : A mode where the entire magnetic field is in the transverse plane and has no portion parallel to the length axis.
Last Answer : TM mode
Description : How long does it take to scan 2 picture elements when 400 are scanned in 50 microseconds?
Last Answer : 0.25 microsec
Description : ____ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer.
Last Answer : UDP
Description : Classification of protocol that interprets a frame of data as a group of successive bit combined into predetermined pattern of fixed length, usually 8 bits each.
Last Answer : Character and Byte-oriented protocols
Description : What is the size of the ‘total length’ field in IPv4 datagram? a. 4 bit b. 8 bit c. 16 bit d. 32 bit
Last Answer : c. 16 bit
Description : Plots of field strength or power density with respect to the value at a reference point.
Last Answer : relative radiation pattern
Description : What is the maximum size of data that the application layer can pass on to the TCP layer below? a. Any size b. 216 bytes - size of TCP header c. 216 bytes d. 1500
Last Answer : a. Any size
Description : The magnetic field of an antenna is perpendicular to the earth. The antenna’s polarization ___
Last Answer : is horizontal
Description : The radiation pattern plotted in terms of electric field strength or power density
Last Answer : absolute radiation pattern
Description : When microwave energy is passed through a piece of ferrite in a magnetic field, another effect occurs. If the frequency of the microwave energy is much greater than the electron wobble frequency, the plane of polarization of the wavefront is rotated. This is known as
Last Answer : Faraday Rotation Effect
Description : The vertical field-scanning frequency is ______ Hz
Last Answer : 60
Description : The size, shape, and dielectric material of a waveguide must be constant throughout its length for energy to move from one end to the other without reflections. What could be the effect in any abrupt change in its size or shape?
Last Answer : Reflections.
Description : The reason a CSMA/CD network has a minimum length for packets is:
Last Answer : to make sure all other nodes hear a collision in progress
Description : An IP datagram of size 1000 bytes arrives at a router. The router has to forward this packet on a link whose MTU (maximum transmission unit) is 100 bytes. Assume that the size of the IP header is 20 bytes ... the IP datagram will be divided into for transmission is : a. 10 b. 50 c. 12 d. 13
Last Answer : d. 13
Description : Header of a frame generally contains a. synchronization bytes b. addresses c. frame identifier d. all of the mentioned
Last Answer : d. all of the mentioned
Description : Header of a Layer two frame usually contain ______________ A. synchronization bytes B. addresses C. frame identifier D. all of the mentioned
Last Answer : D. all of the mentioned
Description : In a packet switching network, if the message size is 48 bytes and each packet contains a header of 3 bytes. If 24 packets are required to transmit the message, the packet size is ................ (1) 2 bytes (2) 1 byte (3) 4 bytes (4) 5 bytes
Last Answer : (4) 5 bytes
Description : It is the same with directive gain except that the total power fed to the antenna is used and the antenna efficiency is taken into account.
Last Answer : power gain
Description : The total bandwidth of an NTSC TV signal is:
Last Answer : . 6 MHz
Last Answer : 6 MHz
Description : _______ refers to the structure or format of the data, meaning the order in which they are presented.
Last Answer : Semantics
Description : A ________ is a set of rules that governs data communication
Last Answer : protocol
Description : Sixteen different levels (symbols) are used to encode binary data. The channel bandwidth is 36 MHz. The maximum channel capacity is
Last Answer : 288 Mbps
Description : It is proposed network designed by major telephone companies in conjunction with the ITU-T with the intent of providing worldwide telecommunications support for voice, data, video and facsimile information within the same networ
Last Answer : ISDN
Description : The characters making up the message in a synchronous transmission are collectively referred to as the data
Last Answer : block
Description : A transmission of binary data which involves the transmission of two non – zero voltage level
Last Answer : Bipolar
Description : It is how the primary designates the secondary as the designation of recipient of data
Last Answer : Selection
Description : Variation of biphase that is used for encoding SMPTE time code data and for recording on video tapes
Last Answer : Biphase – M
Description : Set rules implementing and governing an orderly exchange of data between layers of two devices, such as line control units and front – end processors.
Last Answer : Data Link Protocol
Description : A modulation technique where data rates in excess of 56 kbps can be achieved over telephone circuits
Last Answer : Trellis Code Modulation
Description : Data rate at which serial PCM bits are clocked out of the PCM encoder onto the transmission line.
Last Answer : line speed
Description : Dividing the data block by a constant produces a remainder that is used for error detection.
Last Answer : Cyclic redundancy check