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101. |
HTTP client requests by establishing a __________ connection to a particular port on the server. |
A. | user datagram protocol |
B. | transmission control protocol |
C. | broader gateway protocol |
D. | none of the mentioned |
Answer» B. transmission control protocol |
102. |
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. | none of the mentioned |
Answer» A. multiple http requests are sent on a single tcp connection without waiting for the corresponding responses |
103. |
FTP server listens for connection on port number |
A. | 20 |
B. | 21 |
C. | 22 |
D. | 23 |
Answer» B. 21 |
104. |
In FTP protocol, client contacts server using ____ as the transport protocol. |
A. | transmission control protocol |
B. | user datagram protocol |
C. | datagram congestion control protocol |
D. | stream control transmission protocol |
Answer» A. transmission control protocol |
105. |
In which mode FTP, the client initiates both the control and data connections. |
A. | active mode |
B. | passive mode |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» B. passive mode |
106. |
The file transfer protocol is built on |
A. | data centric architecture |
B. | service oriented architecture |
C. | client server architecture |
D. | none of the mentioned |
Answer» C. client server architecture |
107. |
In file transfer protocol, data transfer can be done in |
A. | stream mode |
B. | block mode |
C. | compressed mode |
D. | all of the mentioned |
Answer» D. all of the mentioned |
108. |
Ethernet frame consists of |
A. | mac address |
B. | ip address |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. mac address |
109. |
What is stat frame delimeter (SFD) in ethernet frame? |
A. | 10101010 |
B. | 10101011 |
C. | 00000000 |
D. | 11111111 |
Answer» B. 10101011 |
110. |
What is autonegotiation? |
A. | a procedure by which two connected devices choose common transmission parameters |
B. | a security algorithm |
C. | a routing algorithm |
D. | none of the mentioned |
Answer» A. a procedure by which two connected devices choose common transmission parameters |
111. |
Ethernet in metropolitan area network (MAN) can be used as |
A. | pure ethernet |
B. | ethernet over sdh |
C. | ethernet over mpls |
D. | all of the mentioned |
Answer» D. all of the mentioned |
112. |
A point-to-point protocol over ethernet is a network protocol for |
A. | encapsulating ppp frames inside ethernet frames |
B. | encapsulating ehternet framse inside ppp frames |
C. | for security of ethernet frames |
D. | for security of ppp frames |
Answer» A. encapsulating ppp frames inside ethernet frames |
113. |
High speed ethernet works on |
A. | coaxial cable |
B. | twisted pair cable |
C. | optical fiber |
D. | none of the mentioned |
Answer» C. optical fiber |
114. |
The maximum size of payload field in ethernet frame is |
A. | 1000 bytes |
B. | 1200 bytes |
C. | 1300 bytes |
D. | 1500 bytes |
Answer» D. 1500 bytes |
115. |
What is interframe gap? |
A. | idle time between frames |
B. | idle time between frame bits |
C. | idle time between packets |
D. | none of the mentioned |
Answer» A. idle time between frames |
116. |
An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called |
A. | short frame |
B. | run frame |
C. | mini frame |
D. | man frame |
Answer» B. run frame |
117. |
Which of this is not a constituent of residential telephone line? |
A. | a high-speed downstream channel |
B. | a medium-speed downstream channel |
C. | a low-speed downstream channel |
D. | none of the mentioned |
Answer» C. a low-speed downstream channel |
118. |
In DSL telco provides these services |
A. | wired phone access |
B. | isp |
C. | all of the mentioned |
D. | none of the mentioned |
Answer» C. all of the mentioned |
119. |
The function of DSLAM is |
A. | convert analog signals into digital signals |
B. | convert digital signals into analog signals |
C. | amplify digital signals |
D. | none of the mentioned |
Answer» A. convert analog signals into digital signals |
120. |
The following term is not associted with DSL |
A. | dslam |
B. | co |
C. | splitter |
D. | cmts |
Answer» D. cmts |
121. |
HFC contains |
A. | fibre cable |
B. | coaxial cable |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» C. both of the mentioned |
122. |
Choose the statement which is not applicable for cable internet access |
A. | it is a shared broadcast medium |
B. | it includes hfcs |
C. | cable modem connects home pc to ethernet port |
D. | analog signal is converted to digital signal in dslam |
Answer» D. analog signal is converted to digital signal in dslam |
123. |
Among the optical-distribution architectures that is essentially switched ehternet is |
A. | aon |
B. | pon |
C. | non |
D. | none of the mentioned |
Answer» A. aon |
124. |
StarBand provides |
A. | ftth internet access |
B. | cable access |
C. | telephone access |
D. | satellite access |
Answer» D. satellite access |
125. |
Home Access is provided by |
A. | dsl |
B. | fttp |
C. | cable |
D. | all of the mentioned |
Answer» D. all of the mentioned |
126. |
ONT is connected to splitter using |
A. | high speed fibre cable |
B. | hfc |
C. | optical cable |
D. | none of the mentioned |
Answer» C. optical cable |
127. |
The sharing of a medium and its link by two or more devices is called _______ |
A. | fully duplexing |
B. | multiplexing |
C. | both a and b |
D. | none of the mentioned |
Answer» B. multiplexing |
128. |
Multiplexing is used in _______ |
A. | packet switching |
B. | circuit switching |
C. | data switching |
D. | none of the mentioned |
Answer» B. circuit switching |
129. |
Which multiplexing technique transmits digital signals ? |
A. | fdm |
B. | tdm |
C. | wdm |
D. | none of the mentioned |
Answer» B. tdm |
130. |
If there are n signal sources of same data rate than TDM link has _______ slots |
A. | n |
B. | n/2 |
C. | n*2 |
D. | 2^n |
Answer» A. n |
131. |
If link transmits 4000frames per second, and each slot has 8 bits,the transmission rate of circuit this TDM is |
A. | 32kbps |
B. | 500bps |
C. | 500kbps |
D. | none of the mentioned |
Answer» A. 32kbps |
132. |
The state when dedicated signals are idle are called |
A. | death period |
B. | poison period |
C. | silent period |
D. | none of the mentioned |
Answer» C. silent period |
133. |
Multiplexing can provide |
A. | efficiency |
B. | privacy |
C. | anti jamming |
D. | both a and b |
Answer» D. both a and b |
134. |
In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources. |
A. | greater than |
B. | lesser than |
C. | equal to |
D. | equal to or greater than |
Answer» A. greater than |
135. |
In TDM, slots are further divided into |
A. | seconds |
B. | frames |
C. | packets |
D. | none of the mentioned |
Answer» B. frames |
136. |
Multiplexing technique that shifts each signal to a different carrier frequency |
A. | fdm |
B. | tdm |
C. | either a or b |
D. | both a and b |
Answer» A. fdm |
137. |
Physical or logical arrangement of network is |
A. | topology |
B. | routing |
C. | networking |
D. | none of the mentioned |
Answer» A. topology |
138. |
In this topology there is a central controller or hub |
A. | star |
B. | mesh |
C. | ring |
D. | bus |
Answer» A. star |
139. |
This topology requires multipoint connection |
A. | star |
B. | mesh |
C. | ring |
D. | bus |
Answer» D. bus |
140. |
Data communication system spanning states, countries, or the whole world is |
A. | lan |
B. | wan |
C. | man |
D. | none of the mentioned |
Answer» B. wan |
141. |
Data communication system within a building or campus is |
A. | lan |
B. | wan |
C. | man |
D. | none of the mentioned |
Answer» A. lan |
142. |
Expand WAN |
A. | world area network |
B. | wide area network |
C. | web area network |
D. | none of the mentioned |
Answer» B. wide area network |
143. |
A local telephone network is an example of a _______ network |
A. | packet switched |
B. | circuit switched |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» B. circuit switched |
144. |
Most packet switches use this principle |
A. | stop and wait |
B. | store and forward |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» B. store and forward |
145. |
If there are N routers from source to destination, total end to end delay in sending packet P(L->number of bits in the packet R-> transmission rate) |
A. | n |
B. | (n*l)/r |
C. | (2n*l)/r |
D. | l/r |
Answer» B. (n*l)/r |
146. |
Method(s) to move data through a network of links and switches |
A. | packet switching |
B. | circuit switching |
C. | line switching |
D. | both a and b |
Answer» D. both a and b |
147. |
The resources needed for communication between end systems are reserved for the duration of session between end systems in ________ |
A. | packet switching |
B. | circuit switching |
C. | line switching |
D. | frequency switching |
Answer» B. circuit switching |
148. |
As the resouces are reserved between two communicating end systems in circuit switching, this is achieved |
A. | authentication |
B. | guaranteed constant rate |
C. | reliability |
D. | store and forward |
Answer» B. guaranteed constant rate |
149. |
What is internet? |
A. | a single network |
B. | a vast collection of different networks |
C. | interconnection of local area networks |
D. | none of the mentioned |
Answer» B. a vast collection of different networks |
150. |
To join the internet, the computer has to be connected to a |
A. | internet architecture board |
B. | internet society |
C. | internet service provider |
D. | none of the mentioned |
Answer» C. internet service provider |
151. |
Internet access by transmitting digital data over the wires of a local telephone network is provided by |
A. | leased line |
B. | digital subscriber line |
C. | digital signal line |
D. | none of the mentioned |
Answer» B. digital subscriber line |
152. |
ISP exchanges internet traffic between their networks by |
A. | internet exchange point |
B. | subscriber end point |
C. | isp end point |
D. | none of the mentioned |
Answer» A. internet exchange point |
153. |
Which one of the following protocol is not used in internet? |
A. | http |
B. | dhcp |
C. | dns |
D. | none of the mentioned |
Answer» D. none of the mentioned |
154. |
IPv6 addressed have a size of |
A. | 32 bits |
B. | 64 bits |
C. | 128 bits |
D. | 265 bits |
Answer» C. 128 bits |
155. |
Internet works on |
A. | packet switching |
B. | circuit switching |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. packet switching |
156. |
Which one of the following is not an application layer protocol used in internet? |
A. | remote procedure call |
B. | internet relay chat |
C. | resource reservation protocol |
D. | none of the mentioned |
Answer» C. resource reservation protocol |
157. |
Which protocol assigns IP address to the client connected in the internet? |
A. | dhcp |
B. | ip |
C. | rpc |
D. | none of the mentioned |
Answer» A. dhcp |
158. |
Which one of the following is not used in media access control? |
A. | ethernet |
B. | digital subscriber line |
C. | fiber distributed data interface |
D. | none of the mentioned |
Answer» D. none of the mentioned |
159. |
In cryptography, what is cipher? |
A. | algorithm for performing encryption and decryption |
B. | encrypted message |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. algorithm for performing encryption and decryption |
160. |
In asymmetric key cryptography, the private key is kept by |
A. | sender |
B. | receiver |
C. | sender and receiver |
D. | all the connected devices to the network |
Answer» B. receiver |
161. |
Which one of the following algorithm is not used in asymmetric key cryptography? |
A. | rsa algorithm |
B. | diffie-hellman algorithm |
C. | electronic code book algorithm |
D. | none of the mentioned |
Answer» C. electronic code book algorithm |
162. |
In cryptography, the order of the letters in a message is rearranged by |
A. | transpositional ciphers |
B. | substitution ciphers |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. transpositional ciphers |
163. |
What is data encryption standard (DES)? |
A. | block cipher |
B. | stream cipher |
C. | bit cipher |
D. | none of the mentioned |
Answer» A. block cipher |
164. |
Cryptanalysis is used |
A. | to find some insecurity in a cryptographic scheme |
B. | to increase the speed |
C. | to encrypt the data |
D. | none of the mentioned |
Answer» A. to find some insecurity in a cryptographic scheme |
165. |
Which one of the following is a cryptographic protocol used to secure HTTP connection? |
A. | stream control transmission protocol (sctp) |
B. | transport layer security (tsl) |
C. | explicit congestion notification (ecn) |
D. | resource reservation protocol |
Answer» B. transport layer security (tsl) |
166. |
Voice privacy in GSM cellular telephone protocol is provided by |
A. | a5/2 cipher |
B. | b5/4 cipher |
C. | b5/6 cipher |
D. | b5/8 cipher |
Answer» A. a5/2 cipher |
167. |
ElGamal encryption system is |
A. | symmetric key encryption algorithm |
B. | asymmetric key encryption algorithm |
C. | not an encryption algorithm |
D. | none of the mentioned |
Answer» B. asymmetric key encryption algorithm |
168. |
Cryptographic hash function takes an arbitrary block of data and returns |
A. | fixed size bit string |
B. | variable size bit string |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. fixed size bit string |
169. |
The attackers a network of compromised devices known as |
A. | internet |
B. | botnet |
C. | telnet |
D. | d-net |
Answer» B. botnet |
170. |
Which of the following is a form of DoS attack ? |
A. | vulnerability attack |
B. | bandwidth flooding |
C. | connection flooding |
D. | all of the mentioned |
Answer» D. all of the mentioned |
171. |
The DoS attack is which the attacker establishes a large number of half-open or fully open TCP connections at the target host |
A. | vulnerability attack |
B. | bandwidth flooding |
C. | connection flooding |
D. | all of the mentioned |
Answer» C. connection flooding |
172. |
The DoS attack is which the attacker sends deluge of packets to the targeted host |
A. | vulnerability attack |
B. | bandwidth flooding |
C. | connection flooding |
D. | all of the mentioned |
Answer» B. bandwidth flooding |
173. |
Packet sniffers involve |
A. | active receiver |
B. | passive receiver |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» B. passive receiver |
174. |
Sniffers can be deployed in |
A. | wired environment |
B. | wifi |
C. | ethernet lan |
D. | all of the mentioned |
Answer» D. all of the mentioned |
175. |
Firewalls are often configured to block |
A. | udp traffic |
B. | tcp traffic |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» A. udp traffic |
176. |
DHCP (dynamic host configuration protocol) provides _____ to the client. |
A. | ip address |
B. | mac address |
C. | url |
D. | none of the mentioned |
Answer» A. ip address |
177. |
DHCP is used for |
A. | ipv6 |
B. | ipv4 |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» C. both (a) and (b) |
178. |
The DHCP server |
A. | maintains a database of available ip addresses |
B. | maintains the information about client configuration parameters |
C. | grants a ip address when receives a request from a client |
D. | all of the mentioned |
Answer» D. all of the mentioned |
179. |
IP assigned for a client by DHCP server is |
A. | for a limited period |
B. | for unlimited period |
C. | not time dependent |
D. | none of the mentioned |
Answer» A. for a limited period |
180. |
DHCP uses UDP port ____ for sending data to the server. |
A. | 66 |
B. | 67 |
C. | 68 |
D. | 69 |
Answer» B. 67 |
181. |
The DHCP server can provide the _______ of the IP addresses. |
A. | dynamic allocation |
B. | automatic allocation |
C. | static allocation |
D. | all of the mentioned |
Answer» D. all of the mentioned |
182. |
DHCP client and servers on the same subnet communicate via |
A. | udp broadcast |
B. | udp unicast |
C. | tcp broadcast |
D. | tcp unicast |
Answer» A. udp broadcast |
183. |
After obtaining the IP address, to prevent the IP conflict the client may use |
A. | internet relay chat |
B. | broader gateway protocol |
C. | address resolution protocol |
D. | none of the mentioned |
Answer» C. address resolution protocol |
184. |
What is DHCP snooping? |
A. | techniques applied to ensure the security of an existing dhcp infrastructure |
B. | encryption of the dhcp server requests |
C. | algorithm for dhcp |
D. | none of the mentioned |
Answer» A. techniques applied to ensure the security of an existing dhcp infrastructure |
185. |
If DHCP snooping is configured on a LAN switch, then clients having specific ______ can access the network. |
A. | mac address |
B. | ip address |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» C. both (a) and (b) |
186. |
Real-time transport protocol (RTP) is mostly used in |
A. | streaming media |
B. | video teleconference |
C. | television services |
D. | all of the mentioned |
Answer» D. all of the mentioned |
187. |
RTP is used to |
A. | carry the media stream |
B. | monitor transmission statistics of streams |
C. | monitor quality of service of streams |
D. | none of the mentioned |
Answer» A. carry the media stream |
188. |
RTP provides the facility of jitter ____ . |
A. | compensation |
B. | expansion |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» A. compensation |
189. |
Which protocol provides the synchronization between media streams? |
A. | rtp |
B. | rtcp |
C. | rpc |
D. | none of the mentioned |
Answer» B. rtcp |
190. |
An RTP session is established for |
A. | each media stream |
B. | all media streams |
C. | some predefined number of media streams |
D. | none of the mentioned |
Answer» A. each media stream |
191. |
RTP can use |
A. | unprevileleged udp ports |
B. | stream control transmission protocol |
C. | datagram congestion control protocol |
D. | all of the mentioned |
Answer» D. all of the mentioned |
192. |
Which one of the following multimedia formats can not be supported by RTP? |
A. | mpeg-4 |
B. | mjpeg |
C. | mpeg |
D. | none of the mentioned |
Answer» D. none of the mentioned |
193. |
An RTP header has a minimum size of |
A. | 12 bytes |
B. | 16 bytes |
C. | 24 bytes |
D. | 32 bytes |
Answer» A. 12 bytes |
194. |
Which one of the following is not correct? |
A. | rtcp provides canonical end-point identifiers to all session participants |
B. | rtcp reports are expected to be sent by all participants |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» D. none of the mentioned |
195. |
Which protocol defines a profile of RTP that provides cryptographic services for the transfer of payload data? |
A. | srtp |
B. | rtcp |
C. | rcp |
D. | none of the mentioned |
Answer» A. srtp |
196. |
Ping can |
A. | measure round-trip time |
B. | report packet loss |
C. | report latency |
D. | all of the mentioned |
Answer» D. all of the mentioned |
197. |
Suppose two IPv6 nodes want to interoperate using IPv6 datagrams but are connected to each other by intervening IPv4 routers. The best solution here is |
A. | use dual-stack approach |
B. | tunneling |
C. | no solution |
D. | replace the system |
Answer» B. tunneling |
198. |
Ping sweep is a part of |
A. | traceroute |
B. | nmap |
C. | route |
D. | ipconfig |
Answer» B. nmap |
199. |
ICMP is used in |
A. | ping |
B. | traceroute |
C. | ifconfig |
D. | both a and b |
Answer» D. both a and b |
200. |
_____ command is used to manipulate TCP/IP routing table. |
A. | route |
B. | ipconfig |
C. | ifconfig |
D. | traceroute |
Answer» A. route |
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