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Question 1

1.       If a router malfunctions, using Link-State protocol:

	a.	Each node computes only its own table
	b.	Both a and b are correct responses
	c.	Each node’s table used by others so error propagates through network
	d.	Node can advertise incorrect link cost

0.25 points   

Question 2

1.       Flow control is guaranteed to solve congestion problems. 

	a.	False
	b.	True

 

1.       Packets used by the Internet Protocol are called:

	a.	None of the above
	b.	Fragment
	c.	Frame
	d.	Datagrams

0.25 points   

Question 4

1.       The responsibility/responsibilities of ICANN include: 

	a.	All of the above
	b.	Resolution of Domain Name disputes
	c.	Allocation of addresses
	d.	Management of DNS

 

Question 5

1.       NAT stands for ______

	a.	Network address transmitter
	b.	Network address table
	c.	All of the above
	d.	Network Address Translation

0.25 points   

Question 6

1.       ___________________ is the main protocol in Network Layer. It is responsible for packetizing, forwarding, and delivery of a packet.

	a.	ICMPv4 (Internet Control Message Protocol version 4)
	b.	IGMP (Internet Group Management Protocol)
	c.	ARP (Address Resolution Protocol)
	d.	IPv4 (Internet Protocol version 4)

Question 7

1.       The reasons for handling routing differently in Inter-AS and Intra-AS routing are based on: 

	a.	Policy, scale and performance
	b.	Distance vector versus link state information
	c.	Differences in router capabilities
	d.	Imposed standards for packaging messages

0.25 points   

Question 8

1.       Switch is a Device of _________ Layer.

	a.	Application Layer
	b.	Session Layer
	c.	Data Link LayerÂ
	d.	Network Layer

Question 9

1.       The selective repeat approach requires that:

	a.	Both b and c responses are correct
	b.	Receiver acknowledges individual packets
	c.	Receiver only sends cumulative acknowledgements
	d.	Sender maintains timer for each unacked packet

0.25 points   

Question 10

1.       HUB is a _________ Device and Switch is a ________ Device.

	a.	Unicast, Multicast
	b.	Broadcast, Unicast
	c.	None of the above
	d.	Multicast, Unicast

 

Question 11

1.       DHCP (dynamic host configuration protocol) provides _____ to the client.

	a.	URL
	b.	IP address
	c.	None of the above
	d.	MAC address

0.25 points   

Question 12

1.       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

Question 13

1.       A __________________ is a packet sent by a node to the source to inform it of congestion. 

	a.	Choke packet
	b.	Backpressure method
	c.	Request packet
	d.	LS packet

0.25 points   

Question 14

1.       What is the Broadcast IP Address?

	a.	127.0.0.1
	b.	255.255.255.255
	c.	255.255.0.0
	d.	255.0.0.0Â

Question 15

1.       The Forwarding decision in a router when used in a virtual circuit network is based on:

	a.	IP address
	b.	The value of the label
	c.	Port number
	d.	Destination address of the packet

0.25 points   

Question 16

1.       The duty of the network layer includes:

	a.	All of the above
	b.	Packetizing
	c.	Forwarding
	d.	Routing

Question 17

1.       Network layer was designed to provide a connectionless service in which the network-layer protocol treats each packet

	a.	None of the above
	b.	Dependently
	c.	A message travel the same path to their destination
	d.	Independently

0.25 points   

Question 18

1.       If a router malfunctions, using Distance-Vector protocol:

	a.	None of the above
	b.	Node can advertise incorrect path cost
	c.	Corrective actions occur immediately to isolate the error
	d.	Each node computes only its own table

 

 

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