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Correct choice is (a) REQUEST message

For explanation I would SAY: The request message CONSISTS of a request line(e.g., GET /image/logo.png HTTP/1.1, which requests a resource CALLED /image/logo.png from the SERVER).

Right OPTION is (d) 100 kbits/s and 10 kbits/s

To elaborate: Common I2C bus speeds are the 100 kbits/s standard mode and the 10 kbits/s LOW speed mode, but arbitrarily low CLOCK FREQUENCIES are also allowed.

Correct choice is (a) True

For explanation I would say: For long range communications we can convert UART protocol using an external IC to RS232 or RS485, the LATTER of which can be used for wired communication @100 kbits/sec up to 1.2km.

The correct option is (a) ADVANCED Message Queuing PROTOCOL

The EXPLANATION is: Advanced Message Queuing Protocol (AMQP) is an OPEN standard application LAYER protocol for message oriented middleware. The defining features of AMQP are message oriented, queuing, routing, reliability and security.

Correct OPTION is (b) False

The best explanation: Since XML is text based, normal XMPP has a HIGHER network overhead compared to purely binary solution. This issue is being addressed by the experimental XEP -0322.

The CORRECT answer is (c) 7

Explanation: TCP is a standard protocol with STD number 7. TCP is DESCRIBED by RFC 793-Transmission Control Protocol. Its status is recommended, but in practice, every TCP/IP IMPLEMENTATION that is not used exclusively for routing will include TCP.

The correct OPTION is (d) Polling

Best EXPLANATION: Most XMPP implementations use polling, or checking for updates only on demand. A protocol called BOSH LETS server push messages.

Right CHOICE is (a) True

The best explanation: HTTP pipelining further reduces lag time, allowing clients to SEND multiple request before WAITING for each response.

The correct option is (C) 2 types

Easy explanation: The client and server COMMUNICATION by sending PLAIN TEXT message. The client sends requests to the server and server sends the responses. That is

–> Request message

–> RESPONSE message.

Correct answer is (d) Enables network RESOURCES and reduces PERCEPTION of latency and ALLOWS multiple concurrent exchange

To explain I would say: It enables more efficient use of network resources and a reduced perception of latency by introducing header field COMPRESSION and allowing multiple concurrent exchanges on the same connection.

Correct answer is (a) Multiplexing

The explanation is: HTTP allows multiplexing responses: that is sending responses in PARALLEL. This FIXES the “head-of-line blocking” problem of HTTP where only one request can be OUTSTANDING on a TCP/IP connection at a time.

The correct choice is (b) Lean Transport Protocol

Easiest EXPLANATION: IETF has developed SEVERAL LIGHTWEIGHT protocols e.g., CoAP, Embedded Binary HTTP, Lean Transport Protocol.

Right answer is (b) 3.4 Mbit/s

To ELABORATE: High speed mode is compatible with NORMAL I2C devices on the same bus, but requires the MASTER have an active pull-up on the clock line which is ENABLED during high speed transfers.

Right answer is (c) Binary SYNCHRONOUS Communication

Easiest explanation: Binary Synchronous Communication, which were with synchronous voice frequency MODEMS. These protocols were designed to make the best use of BANDWIDTH when modems were ANALOG devices.

The CORRECT answer is (d) Parity error

For explanation I would say: A parity error occurs when the parity of the NUMBER of 1 BIT disagrees with that specified by the parity bit. USING parity is OPTIONAL, so this error will only occur if parity checking has been enabled.

Right option is (b) UART protocol

The best explanation: PROJECTS that USE RFID modules can be BUILT with modules that have a UART interface. This even applies to some FINGER PRINT sensors.

Right OPTION is (a) True

The explanation is: The MAC address itself doesn’t look anything LIKE an IP address. The MAC address is a string of usually six sets of two digits or characters, separated by COLONS.

Correct answer is (a) FIBER CHANNEL Protocol

For explanation I would say: Fiber Channel Protocol is the SCSI interface protocol utilizing an underlying Fiber channel CONNECTION.

The correct option is (B) Traffic control

Explanation: Digital communications networks are subject to bandwidth and PROCESSING speed restrictions, which can mean a huge amount of potential for DATA congestion on the network. This network congestion can affect ALMOST every part of a network. The transport layer can identify the symptoms of overload nodes and reduced FLOW rates.

Correct option is (a) Datagram Delivery Protocol

Explanation: Datagram Delivery Protocol is a member of the AppleTalk networking protocol SUITE. Its main RESPONSIBILITY is for SOCKET to socket delivery of datagram over an AppleTalk NETWORK.

Correct choice is (d) EMAIL

To elaborate: The architecture of the XMPP network is similar to email; ANYONE can RUN their own XMPP server and there is no CENTRAL master server.

The correct answer is (a) backbone

Best explanation: The network layer is considered as the backbone of the network layer. It selects and manages the best LOGICAL path for DATA TRANSFER between nodes.

Correct choice is (C) 3 way

Best explanation: Persistent connections REDUCE REQUEST LATENCY perceptible, because the client does not need to re-negotiate the TCP 3 way HANDSHAKE connection after the first request has been sent.

Correct answer is (b) three-digit

Easiest explanation: HTTP is a request/ RESPONSE protocol where clients request INFORMATION from a server and the server responds to these requests ACCORDINGLY. A response is made up of a three-digit status CODE, some headers and some optional CONTENT.

Right CHOICE is (b) RFC 7252

Explanation: The CORE of the protocol is specified in RFC 7252, important EXTENSIONS are in various of the STANDARDIZATION PROCESS.

Right answer is (c) System Management Bus

For explanation I would say: All communications that were out of band of the LPC bus like general PURPOSE input/output and System Management Bus are tunneled through the ESPI bus.

Right answer is (c) 2 types

Easiest explanation: There are 2 ADDRESSING MODE –> 7-bit addressing mode

–> 10-bit addressing mode.

Correct option is (a) High LEVEL DATA Link CONTROL

For explanation I would say: ISO standard high level data link control synchronous link LAYER protocols, which were with synchronous voice frequency modems.

The correct option is (c) Framing error

Easy explanation: A framing error OCCURS when the designated START and stop bits are not found. If the data line is not in the EXPECTED STATE when the stop bit is expected, a framing error will occur.

Correct OPTION is (a) Multiplexing/ Demultiplexing

The BEST explanation: Transport layer functions are:

–> Multiplexing / DE multiplexing : Normally the transport layer will create distinct network connection for each transport connection REQUIRED by the SESSION layer.

–> Fragmentation and Re assembly: The data accepted by the transport layer from the session layer is SPLIT up into smaller units if needed and then passed to the network layer.

Correct choice is (a) HYPERTEXT Transfer PROTOCOL

For explanation I would say: It is the ONE of the standard protocol that EXPANDS as HyperText Transfer protocol.

Right answer is (b) Overhead

Explanation: The WOT as it leads to a more efficient USE of connections, which REDUCES the overhead of HTTP. It also leads to faster transmission and HENCE POTENTIAL saving in terms of battery power required to communicate.

The correct answer is (a) True

For explanation I WOULD say: USES more battery(percentage battery/hour and percentage battery/MESSAGE). For HTTP in sending message it TAKES 18.43% while for MQTT it takes 16.13%.

The correct answer is (a) True

The BEST explanation: The MASTER device originates the frame for reading and WRITING. MULTIPLE slave devices are supported through selection with individual slave SELECT(SS) line.

Correct answer is (b) 24c32 EEPROM

Easy explanation: The 24c32 EEPROM, which uses two request bytes that are called Address HIGH and address LOW. These bytes are used to address bytes WITHIN the 32 kbit supported by that EEPROM.

The CORRECT option is (b) Only synchronous

Easy EXPLANATION: Synchronous mode REQUIRES both data and CLOCK. Asynchronous mode requires only data.

Right ANSWER is (a) UART protocol

For explanation I WOULD SAY: GSM/GPS modules like SIM900/800 uses UART communication for accepting AT commands that are used to control them and GATHER the replies.

Right answer is (a) Error HANDLING

To explain: This layer has many responsibilities, including error handling and recovery, data FLOW over a network and FULL network flow. It is also USED to develop network based APPLICATIONS.

Correct answer is (a) Checksum

The BEST explanation: Using checksum’s, the data INTEGRITY ACROSS all the delivery layers can be ENSURED. These checksum’s GUARANTEE that the data transmitted is the same as the data received through repeated attempts made by other layers to have missing data resent.