According to the OSI model, at which layer are network addresses assigned?
Session 0.0%
Data Link 0.0%
Presentation 0.0%
Network 100.0%
According to the OSI model, which layer addresses the issue of connections (connection-oriented/ connection-less communication)?
Physical 20.0%
Data Link 0.0%
Network 60.0%
Transport 20.0%
According to the OSI model, which layer addresses the issue of network topologies (star, ring, bus etc)?
Network 33.0%
Data Link 0.0%
Transport 0.0%
Physical 66.0%
According to the OSI model, which layer addresses the issue of switching (packet switching, message switching etc)?
Session 0.0%
Data Link 50.0%
Presentation 50.0%
Network 0.0%
According to the OSI model, which layer addresses the issues of communication media and cable connectors etc?
Network 0.0%
Data Link 0.0%
Transport 0.0%
Physical 100.0%
According to the OSI model, which layer breaks down the data into frames?
Network 0.0%
Data Link 100.0%
Transport 0.0%
Physical 0.0%
According to the OSI model, which layer is responsible for routing?
Session 0.0%
Data Link 0.0%
Presentation 0.0%
Network 100.0%
According to the OSI model, which layer is responsible for sending acknowledgements of successful data transfer?
Session 0%
Transport 0%
Data Link 0%
Presentation 0%
According to the OSI model, which layer is responsible for sending acknowledgements?
Session 25.0%
Transport 75.0%
Data Link 0.0%
Presentation 0.0%
According to the OSI model, which layer performs compression and decompression?
Application 0.0%
Presentation 100.0%
Session 0.0%
Data Link 0.0%
According to the OSI model, which layer performs encryption and decryption?
Application 0.0%
Presentation 100.0%
Session 0.0%
Data Link 0.0%
According to the OSI model, which layer performs parity checking and error checking?
Session 0.0%
Data Link 100.0%
Presentation 0.0%
Physical 0.0%
According to the OSI model, which layer performs the function of transforming bits of data into electrical signals and sending those signals across the media?
Network 0.0%
Data Link 20.0%
Transport 0.0%
Physical 80.0%
According to the OSI model, which layer provides services such as file transfer, database access and email?
Application 100.0%
Presentation 0.0%
Session 0.0%
Data Link 0.0%
At which layer does a Bridge operate?
Network 0.0%
Physical 20.0%
Session 0.0%
Data Link 80.0%
At which layer does a Hub operate?
Network 0.0%
Physical 100.0%
Session 0.0%
Data Link 0.0%
At which layer does a Router operate?
Network 100.0%
Physical 0.0%
Transport 0.0%
Data Link 0.0%
At which layer of the OSI model, does a Proxy Server operate?
Application 100.0%
Transport 0.0%
Session 0.0%
Presentation 0.0%
At which layer of the OSI model, does a World Wide Web browser operate?
Application 100.0%
Transport 0.0%
Session 0.0%
Presentation 0.0%
At which layer of the OSI model, does FTP operate?
Application 100.0%
Transport 0.0%
Session 0.0%
Presentation 0.0%
At which layer of the OSI model, does HTTP operate?
Application 100.0%
Transport 0.0%
Session 0.0%
Presentation 0.0%
At which layer of the OSI model, does SMTP (Simple Mail Transfer Protocol) operate?
Application 100.0%
Transport 0.0%
Session 0.0%
Presentation 0.0%
For which layer of the OSI model has the Ethernet standard been defined?
Physical 0.0%
Data Link 0.0%
Network 0.0%
Transport 0.0%
Both a and b 100.0%
both b and c 0.0%
How is a unique MAC address assigned to a Network Card?
It is built into the card when the card is manufactured 100.0%
The network administrator must assign the address 0.0%
A unique address is automatically assigned when the card drivers are installed 0.0%
A unique address is automatically assigned whenver you boot up the computer 0.0%
How many bearer (B) and data (D) channels are there in a standard ISDN BRI service?
2B + 1D channel 100.0%
16B + 1D channel 0.0%
23B + 1D channel 0.0%
24B + 2D channels 0.0%
How many bits of the MAC address are used by OUI portion?
32 bits 0.0%
48 bits 0.0%
24 bits 100.0%
16 bits 0.0%
How many twisted pairs does a UTP Cat 5 cable have?
2 0.0%
4 0.0%
6 0.0%
8 100.0%
In a TCP/IP network, which layers are basically absent?
Session, Presentation 100.0%
Transport, Session 0.0%
Session, Application 0.0%
Presentation, Application 0.0%
In a TCP/IP network, which of the following must be unique for each computer in the network?
IP address 100.0%
Subnet mask 0.0%
Default Gateway 0.0%
Old mainframe computers were an example of ______?
Distributed computing 0.0%
Client server computing 0.0%
Peer to peer computing 0.0%
Centralized computing 100.0%
What are PPP and SLIP most commonly used for?
Connecting to the Internet through DSL lines 0.0%
Connecting to the Internet through telephone lines 100.0%
Connecting to the Internet through fibre optic lines 0.0%
Connecting to the Internet using wireless modems 0.0%
What are the purposes of the shielding in a Shielded Twisted Pair (STP) cable?
To reduce attenuation 0%
To reduce cross talk 0%
To reduce Electro-Magnetic Interference 0%
What are V.42, V.22, V.42bis?
IEEE standards 0.0%
Modem standards 0.0%
CCITT standards 100.0%
MAC addressing formats 0.0%
Digital Certificate formats 0.0%
What do you call a communication system in which data can be sent in both directions at the same time?
Half Duplex 0.0%
Full Duplex 100.0%
Asynchronous 0.0%
Synchronous 0.0%
What do you call a communication system in which data cannot be sent in both directions at the same time?
Half Duplex 100.0%
Full Duplex 0.0%
Asynchronous 0.0%
Synchronous 0.0%
What do you call a communication system which uses a clocking mechanism to synchronize the sender and receiver?
Half Duplex 0.0%
Full Duplex 0.0%
Asynchronous 0.0%
Synchronous 100.0%
What do you call a communication system which uses start and stop bits to synchronize the sender and receiver?
Half Duplex 0.0%
Full Duplex 0.0%
Asynchronous 100.0%
Synchronous 0.0%
What do you call a fibre optic cable in which the light signals follow a single path?
Multi mode 0.0%
Single mode 0.0%
Broadband 0.0%
Baseband 100.0%
What do you call a fibre optic cable in which the light signals follow multiple paths?
Multi mode 25.0%
Single mode 0.0%
Broadband 75.0%
Baseband 0.0%
What do you call a medium which allows multiple channels?
Multi mode 0.0%
Single mode 0.0%
Broadband 100.0%
Baseband 0.0%
What do you call a medium which only allows a single channel?
Multi mode 0.0%
Single mode 0.0%
Broadband 0.0%
Baseband 100.0%
What does CSMA/CA stand for?
Collision Sense Multiple Access/ Collision Avoidance 0.0%
Carrier Sense Multiple Access/ Collision Avoidance 100.0%
Carrier Sense Multiple Access/ Collision Arbitration 0.0%
Collision Sense Multiple Access/ Carrier Avoidance 0.0%
What does CSMA/CD stand for?
Collision Sense Multiple Access/ Collision Detection 0.0%
Carrier Sense Multiple Access/ Collision Deterence 0.0%
Carrier Sense Multiple Access/ Collision Detection 100.0%
Collision Sense Multiple Access/ Carrier Detection 0.0%
What does ISDN stand for?
Information Systems Digital Network 0.0%
Integrated Services Digital Network 100.0%
Internet Services Digital Network 0.0%
Internet Systems Data Network 0.0%
What is a checksum?
An error detection technique 100.0%
A network troubleshooting device 0.0%
Another name for protocol header 0.0%
Another name for protocol trailer 0.0%
What is a token?
A part of the packet trailer in a token ring network 0.0%
A part of the packet header in a token ring network 0.0%
A special packet which travels from computer to computer in a token ring network 100.0%
What is ATM (Asynchronous Transfer Mode)?
It is a WAN technology based on frequency division multiplexing that uses fixed size packets known as cells 0.0%
It is a WAN technology based on time division multiplexing that uses variable size packets 0.0%
It is a WAN technology based on time division multiplexing that uses fixed size packets known as cells 100.0%
It is a virtual circuit based WAN technology 0.0%
What is attenuation?
Distortion of the signal due to noise 0.0%
Distortion of the signal due to Electro Magnetic Interference 0.0%
Weakening of the signal in a cable over a distance 100.0%
Cross Talk 0.0%
What is multiplexing?
Allowing multiple senders and receivers to share a single channel 0.0%
Allowing multiple senders and receivers to share a single media 100.0%
Allowing bi-directional communication 0.0%
What is the binary value of 157?
11000111 0.0%
10111001 0.0%
11100011 0.0%
10011101 100.0%
What is the binary value of hex 9F?
10011111 100.0%
10111000 0.0%
11110001 0.0%
10001111 0.0%
What is the binary value of hex BF?
10100000 0.0%
10111111 100.0%
11111000 0.0%
00111011 0.0%
What is the full form of DSL?
Digital Subscription Line 0.0%
Digital Super Link 0.0%
Digital Speed Line 0.0%
Digital Subscriber Line 100.0%
What is the full form of PPPoE?
Point to Point Protocol over Exchange 0.0%
Point to Point Password over Ethernet 0.0%
Point to Point Protocol over Ethernet 100.0%
None of the above 0.0%
What is the IEEE 802.2 standard related to?
Definition of the Logical Link Control (LLC) sublayer 100.0%
Token Ring 0.0%
Token Bus 0.0%
Ethernet 0.0%
What is the IEEE 802.3 standard related to?
Definition of the Logical Link Control (LLC) sublayer 0.0%
Token Ring 0.0%
Token Bus 0.0%
Ethernet 100.0%
What is the IEEE 802.5 standard related to?
Definition of the Logical Link Control (LLC) sublayer 0.0%
Token Ring 100.0%
Token Bus 0.0%
Ethernet 0.0%
What is the maximum number of valid IP addresses in a class B network?
65536 100.0%
65534 0.0%
256 0.0%
254 0.0%
What is the maximum speed supported by a standard ISDN BRI?
64 kbps 0.0%
128 kbps 100.0%
256 kbps 0.0%
1.544 mbps 0.0%
What is the maximum transmission speed of CAT 5 cable?
10 Mbps 0.0%
16 Mbps 0.0%
100 Mbps 80.0%
1000 Mbps 20.0%
What is the maximum transmission speed supported by a standard ISDN BRI?
64 kbps 0%
128 kbps 0%
256 kbps 0%
1.544 mbps 0%
What is the purpose of the MAC sublayer?
Sending acknowledgements whenever packets are received 0.0%
Performing data compression 0.0%
Performing encryption and decryption 0.0%
Controlliing the way multiple devices share the same media 100.0%
What is the purpose of the shielding in a Shielded Twisted Pair (STP) cable?
To reduce attenuation 0.0%
To reduce cross talk 0.0%
To reduce Electro-Magnetic Interference 100.0%
What is the purpose of twisting the pairs of cables together in a UTP cable?
To reduce attenuation 0.0%
To reduce cross talk 100.0%
To reduce Electro-Magnetic Interference 0.0%
To reduce noise 0.0%
What is the recommended maximum length(approx) for a segment of UTP cable?
500m 0.0%
1km 0.0%
100m 100.0%
180m 0.0%
What is the speed of a E1 line?
128 kbps 0.0%
144 kbps 0.0%
2.048 Mbps 100.0%
1.544 Mbps 0.0%
What is the speed of a T1 line?
128 kbps 0.0%
144 kbps 0.0%
2.048 Mbps 0.0%
1.544 Mbps 100.0%
What is the speed of ISDN PRI service with 30B + 1D channel?
2.048 Mbps 100.0%
1.544 Mbps 0.0%
144 Kbps 0.0%
128 Kbps 0.0%
What is the X.25 protocol?
It is a packet switching WAN protocol based on public data networks 0.0%
It is a packet switching WAN protocol based on public telephone networks 100.0%
It is a packet switching wireless LAN protocol 0.0%
It is a packet switching wireless WAN protocol 0.0%
When compared to OSI model, the functionality of which of the following two layers is incorporated in the application layer of TCP/IP model?
Session, Presentation 0%
Transport, Session 0%
Session, physical 0%
Presentation, data link 0%
Which cable used for RJ11 connectors?
Thin Coaxial Cable 0.0%
Thick Coaxial Cable 0.0%
Unshielded Twisted Pair Cable 0.0%
Telephone Cable 100.0%
Which cable uses RJ45 connectors?
Thin Coaxial Cable 0.0%
Thick Coaxial Cable 0.0%
Unshielded Twisted Pair Cable 37.0%
Shielded Twisted Pair Cable 62.0%
Which cabling media does not suffer from Electro-Magnetic Interference(EMI)?
Thin Coaxial Cable 0.0%
Thick Coaxial Cable 0.0%
Unshielded Twisted Pair Cable 0.0%
Fibre Optic Cable 100.0%
Which layer do Network Cards and their drivers correspond to?
Data Link 0%
Network 0%
Transport 0%
Session 0%
Which layer is broken down into the MAC and LLC sublayers?
Network 0.0%
Data Link 100.0%
Session 0.0%
Physical 0.0%
Which layer of the OSI model corresponds to IP?
Network 100.0%
Physical 0.0%
Session 0.0%
Data Link 0.0%
Which layer of the OSI model corresponds to TCP?
Network 0.0%
Transport 100.0%
Session 0.0%
Data Link 0.0%
Which media access technique does Ethernet use?
CSMA/CA 0.0%
CSMA/CD 100.0%
Tokens 0.0%
Which media suffers least from attenuation?
Thin Coaxial Cable 0.0%
Thick Coaxial Cable 0.0%
Unshielded Twisted Pair Cable 0.0%
Fibre Optic Cable 100.0%
Which network topology does Ethernet use?
Star 16.0%
Ring 0.0%
Bus 16.0%
Mesh 66.0%
Which network topology does FDDI use?
Star 0.0%
Ring 100.0%
Bus 0.0%
Mesh 0.0%
Which of the following cables can be used to connect a PC and a Hub?
Straight cable 100.0%
Cross cable 0.0%
Rollover cable 0.0%
Any of the above 0.0%
Which of the following cables can be used to directly connect two PCs?
Straight cable 0%
Cross cable 0%
Rollover cable 0%
Any of the above 0%
Which of the following is a Class A network?
172.0.0.0 0.0%
126.0.0.0 100.0%
192.0.0.0 0.0%
225.0.0.0 0.0%
Which of the following is a disadvantage of Client Server networks?
They have poor security 0.0%
Data is not centrally organized 0.0%
Centralized administration is not possible 0.0%
They require high investment in the form of purchase of a server 100.0%
Which of the following is a disadvantage of Peer Networks?
They require high investment in the form of purchase of a server 0.0%
They require high investment in the form of purchase of a specialized network operating system 0.0%
They usually require a network administrator 0.0%
They have poor network security 100.0%
Which of the following is a Fiber Optic Connector?
RJ-11 0.0%
RJ-45 0.0%
MT-RJ 100.0%
None of the above 0.0%
Which of the following is an 'end-to-end' layer?
Physical 0.0%
Data Link 0.0%
Network 0.0%
Transport 100.0%
Which of the following is false with regard to assymetric DSL?
It uses standard copper telephone cables 0.0%
It delivers much higher speeds than a serial modem 0.0%
It uses more channels for downloading data and fewer for uploading 0.0%
It employs analog modulation to deliver data from your PC to the telephone service provider 100.0%
Which of the following is mentioned in the correct sequence (from lowest layer to highest)?
Physical, Network, Data Link, Session, Transport, Presentation, Application 0.0%
Physical, Data Link, Network, Transport, Session, Presentation, Application 100.0%
Transport, Session, Data Link, Application, Presentation, Network, Physical 0.0%
Physical, Data Link, Network, Transport, Presentation, Session, Application 0.0%
Which of the following is used as a high speed network backbone media?
Thin Coaxial Cable 0.0%
Thick Coaxial Cable 0.0%
Unshielded Twisted Pair Cable 0.0%
Fibre Optic Cable 100.0%
Which of the following protocols does not support Routing?
IPX/SPX 0.0%
TCP/IP 0.0%
NetBEUI 100.0%
Which of the following ranges are reserved as private addresses?
192.168.0.0 - 192.255.255.255 15.0%
172.16.0.0 - 172.255.255.255 7.0%
10.0.0.0 - 10.255.255.255 38.0%
172.16.0.0 - 172.31.255.255 38.0%
Which of the following services is feasible using standard ISDN?
Fax 0.0%
Voice Telephony 0.0%
Data Transfer 0.0%
Video Conferencing 0.0%
All of the above 100.0%
Which one of the following devices breaks up a Broadcast Domain by default?
Hub 0.0%
Repeater 0.0%
Router 100.0%
Switch 0.0%
Which protocol is connection oriented?
TCP 100.0%
IP 0.0%
UDP 0.0%
ICMP 0.0%
Which protocol uses port number 23?
FTP 0.0%
SMTP 0.0%
Telnet 100.0%
HTTP 0.0%
Which type of connector is mostly used these days for connectivity with the network card?
RJ-11 0.0%
BNC 0.0%
RJ-45 100.0%
RJ-33 0.0%
Which type of network uses dual fibre-optic rings?
Ethernet 0.0%
FDDI 100.0%
Token Ring 0.0%
ATM 0.0%