Welcome to Networking Quiz, Randomly Selected !!

Question 1. If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is

1200 bands

3200 bands

4800 bands

9600 bands

Question 2. With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?

192

224

240

248

Question 3. If delays are recorded as 10 bit numbers in a 50 router network, and delay vectors are exchanged twice a second, how much bandwidth per fill duplex line is occupied by the distributed routing algorithm?

500 bps

1500 bps

5 bps

1000 bps

Question 4. In CRC there is no error if the remainder at the receiver is ----.

equal to the remainder at the sender

zero

non-zero

the quotient at the sender

Question 5. What is a valid IPv6 Address?

3EF4B4:05A8AA:046B63:000000:000000:000000:700800:6EF3AB

3EF4:0A8A:04B3:0000:0000:0000:0000:6EF3

3EF4:0A8K:04F3::76HY:0000:0000:6EF3

3EF4:0A8A:04B3::74A9:0000::6EF3

Question 6. Ethernet and Token-Ring are the two most commonly used network architectures in the world. Jim has heard of the different topologies for networks and wants to choose the architecture that will provide him with the most options. Which of the following would that be? Choose the most correct answer.

Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology

Ethernet, because it is cabled using fiber-optic cable

Token-Ring, because it uses a MAU

Ethernet, because it can be set up with most topologies and can use multiple transfer speeds

Question 7. Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

P I (K + 1)

KIK (1 + F)

1/ (1 - F)

K I (K - P)

Question 8. You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 25 hosts and a maximum number of subnets?

255.255.255.192

255.255.255.224

255.255.255.240

255.255.255.248

Question 9. contention is ?

One or more conductors that serve as a common connection for a related group of devices

a continuous frequency capable of being modulated or impressed with a second signal

the condition when two or more stations attempt to use the same channel at the same time

a collection of interconnected functional units that provides a data communications service among stations attached to the network

Question 10. Which of the following layer protocols are responsible for user and the application programmer support such as passwords, resource sharing, file transfer and network management?

Layer 7 protocols

Layer 6 protocols

Layer 5 protocols

Layer 4 protocols