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Computer Networks MCQs

998+ questions with answers

151

Which is not a application layer protocol?

a HTTP
b SMTP
c FTP
d TCP
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152

The packet of information at the application layer is called __________

a Packet
b Message
c Segment
d Frame
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153

Which one of the following is an architecture paradigms?

a Peer to peer
b Client-server
c HTTP
d Both Peer-to-Peer & Client-Server
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154

Application developer has permission to decide the following on transport layer side

a Transport layer protocol
b Maximum buffer size
c Both Transport layer protocol and Maximum buffer size
d None of the mentioned
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155

Application layer offers _______ service.

a End to end
b Process to process
c Both End to end and Process to process
d None of the mentioned
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156

E-mail is _________

a Loss-tolerant application
b Bandwidth-sensitive application
c Elastic application
d None of the mentioned
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157

Which of the following is an application layer service?

a Network virtual terminal
b File transfer, access, and management
c Mail service
d All of the mentioned
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158

To deliver a message to the correct application program running on a host, the _______ address must be consulted.

a IP
b MAC
c Port
d None of the mentioned
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159

Which is a time-sensitive service?

a File transfer
b File download
c E-mail
d Internet telephony
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160

Transport services available to applications in one or another form _________

a Reliable data transfer
b Timing
c Security
d All of the mentioned
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161

Electronic mail uses which Application layer protocol?

a SMTP
b HTTP
c FTP
d SIP
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162

The ____________ translates internet domain and host names to IP address.

a domain name system
b routing information protocol
c network time protocol
d internet relay chat
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163

Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host?

a HTTP
b FTP
c Telnet
d TCP
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164

Application layer protocol defines ____________

a types of messages exchanged
b message format, syntax and semantics
c rules for when and how processes send and respond to messages
d all of the mentioned
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165

Which one of the following protocol delivers/stores mail to reciever server?

a simple mail transfer protocol
b post office protocol
c internet mail access protocol
d hypertext transfer protocol
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166

The ASCII encoding of binary data is called

a base 64 encoding
b base 32 encoding
c base 16 encoding
d base 8 encoding
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167

Which one of the following is not an application layer protocol?

a media gateway protocol
b dynamic host configuration protocol
c resource reservation protocol
d session initiation protocol
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168

Which protocol is a signaling communication protocol used for controlling multimedia communication sessions?

a session initiation protocol
b session modelling protocol
c session maintenance protocol
d resource reservation protocol
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169

Which one of the following is not correct?

a Application layer protocols are used by both source and destination devices during a communication session
b HTTP is a session layer protocol
c TCP is an application layer protocol
d All of the mentioned
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170

When displaying a web page, the application layer uses the _____________

a HTTP protocol
b FTP protocol
c SMTP protocol
d TCP protocol
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171

The number of objects in a Web page which consists of 4 jpeg images and HTML text is ________

a 4
b 1
c 5
d 7
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172

The default connection type used by HTTP is _________

a Persistent
b Non-persistent
c Can be either persistent or non-persistent depending on connection request
d None of the mentioned
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173

The time taken by a packet to travel from client to server and then back to the client is called __________

a STT
b RTT
c PTT
d JTT
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174

The HTTP request message is sent in _________ part of three-way handshake.

a First
b Second
c Third
d Fourth
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175

In the process of fetching a web page from a server the HTTP request/response takes __________ RTTs.

a 2
b 1
c 4
d 3
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176

The first line of HTTP request message is called _____________

a Request line
b Header line
c Status line
d Entity line
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177

The __________ method when used in the method field, leaves entity body empty.

a POST
b SEND
c GET
d PUT
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178

The HTTP response message leaves out the requested object when ____________ method is used

a GET
b POST
c HEAD
d PUT
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179

Find the oddly matched HTTP status codes

a 200 OK
b 400 Bad Request
c 301 Moved permanently
d 304 Not Found
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180

Which of the following is not correct?

a Web cache doesnt has its own disk space
b Web cache can act both like server and client
c Web cache might reduce the response time
d Web cache contains copies of recently requested objects
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181

The conditional GET mechanism

a Imposes conditions on the objects to be requested
b Limits the number of response from a server
c Helps to keep a cache upto date
d None of the mentioned
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182

HTTP is ________ protocol.

a application layer
b transport layer
c network layer
d data link layer
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183

In the network HTTP resources are located by

a uniform resource identifier
b unique resource locator
c unique resource identifier
d union resource locator
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184

HTTP client requests by establishing a __________ connection to a particular port on the server.

a user datagram protocol
b transmission control protocol
c border gateway protocol
d domain host control protocol
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185

In HTTP pipelining ________________

a multiple HTTP requests are sent on a single TCP connection without waiting for the corresponding responses
b multiple HTTP requests can not be sent on a single TCP connection
c multiple HTTP requests are sent in a queue on a single TCP connection
d multiple HTTP requests are sent at random on a single TCP connection
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186

FTP server listens for connection on port number ____________

a 20
b 21
c 22
d 23
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187

The File Transfer Protocol is built on ______________

a data centric architecture
b service oriented architecture
c client server architecture
d connection oriented architecture
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188

In File Transfer Protocol, data transfer cannot be done in ___________

a stream mode
b block mode
c compressed mode
d message mode
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189

Expansion of FTP is __________

a Fine Transfer Protocol
b File Transfer Protocol
c First Transfer Protocol
d Fast Transfer Protocol
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190

FTP is built on _____ architecture.

a Client-server
b P2P
c Data centric
d Service oriented
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191

FTP uses _________ parallel TCP connections to transfer a file.

a 1
b 2
c 3
d 4
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192

Identify the incorrect statement regarding FTP.

a FTP stands for File Transfer Protocol
b FTP uses two parallel TCP connections
c FTP sends its control information in-band
d FTP sends exactly one file over the data connection
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193

If 5 files are transferred from server A to client B in the same session. The number of TCP connections between A and B is _______

a 5
b 10
c 2
d 6
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194

The commands, from client to server, and replies, from server to client, are sent across the control connection in ________ bit ASCII format.

a 8
b 7
c 3
d 5
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195

Find the FTP reply whose message is wrongly matched.

a 331 – Username OK, password required
b 425 – Can’t open data connection
c 452 – Error writing file
d 452 – Can’t open data connection
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196

The data transfer mode of FTP, in which all the fragmenting has to be done by TCP is ________

a Stream mode
b Block mode
c Compressed mode
d Message mode
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197

The password is sent to the server using ________ command.

a PASSWD
b PASS
c PASSWORD
d PWORD
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198

When the mail server sends mail to other mail servers it becomes ____________

a SMTP server
b SMTP client
c Peer
d Master
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199

If you have to send multimedia data over SMTP it has to be encoded into _______

a Binary
b Signal
c ASCII
d Hash
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200

Expansion of SMTP is ________

a Simple Mail Transfer Protocol
b Simple Message Transfer Protocol
c Simple Mail Transmission Protocol
d Simple Message Transmission Protocol
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