cs 372 final Exam Review
1. What can cause queueing at a router's input ports? (Check all that apply): -
Head of Line blocking. Output port
contention.
Slow outbound link transmission rate.
2. Given a router with 5 input ports and 5 output ports. If the switching fabric is 5 times as fast as the
input/output line speed, queueing can occur at an output port.: True
3. Which of the following are benefits of a virtual circuit network? (Check all that apply): Connection states are
preserved.
Guaranteed bandwidth. Guaranteed
timing.
4. In a datagram network, the responsibilities of the network layer include: (check all that apply).: packet
routing
host-to-host communication packet
forwarding
5. Routing would be more complicated if we used hardware addresses as network addresses.: True
6. The process of determining a path through the internet is called:: routing
7. In addition to a "default" entry, routing tables in an internet store...: the "first hop" in a path to each of the
networks known to the router
8. When a host in a network needs to obtain a valid IP address for itself, it broadcasts a "discover"
message that can be handled by a server,
which will "offer" an IP address within the correct domain.: Dynamic Host Configuration Protocol (DHCP)
9. A router's routing table is output by a routing algorithm .: routing algorithm
10.In a link between Host A, and Host B, we have three intermediary routers: Host A ----- Router Snucky ------
Router Jumpy ------ Router Po ------- Host B Host A's first hop router is:: Snucky
11.Where do network-layer protocols run?: Routers Mobile devices
Laptops
PCs
12.In a subnet, there are reserved IP addresses.: 2
13.What can cause packet queueing at a router's output port? (Check all that apply): Multiple data flows
requiring the same outbound link.
Slow outbound link transmission rate.
14.The process of moving a datagram from a router's input port to output port is handled by : switching fabric
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, cs 372 final Exam Review
15.The "Hop Limit" IPv6 header field indicates how many remaining hops to the destination.: False
16.The IPv6 header does not have a checksum.: True
17.The IPv6 address size is 128 bits.: True
18.In IPv6, there is no datagram fragmentation performed in the network core..: True
19.In IPv6, datagram fragmentation is : handled at the network edge
20.For the IPv4 CIDR address 153.10.22.56 /22 What is the...
Netmask:
Network Address:
Host Mask:
Broadcast Address:
Number of possible hosts:
Host Number:: 255.255.252.0
153.10.20.0
0.0.3.255
153.10.23.255
1022
568
21.ICMP messages are carried within the payload of IP datagrams.: True
22.When a destination host's IP fragment timer expires, it drops all accumu- lated fragments corresponding to
that timer.: True
23.ICMP can carry messages from... (Check all that apply): Router to Router Router to Sender Host
Source Host to Destination Host Destination
Host to Source Host
24.For a TCP/IP datagram coming into a home network through a NAPT device, which of the following header
fields (IP and/or TCP) are altered? (Check all that apply): Destination IP address
Destination Port Header
Checksum
25.The path MTU is the largest MTU on a path from sender to receiver.: False
26.The "traceroute" application (on Windows) sends ICMP messages by de- fault.: True
27.If hosting a server inside a NATed network, how do clients outside the NAPT router connect to the server?
(Check all that apply): Using Universal Plug and Play (UPnP)
Through a connection relay service
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1. What can cause queueing at a router's input ports? (Check all that apply): -
Head of Line blocking. Output port
contention.
Slow outbound link transmission rate.
2. Given a router with 5 input ports and 5 output ports. If the switching fabric is 5 times as fast as the
input/output line speed, queueing can occur at an output port.: True
3. Which of the following are benefits of a virtual circuit network? (Check all that apply): Connection states are
preserved.
Guaranteed bandwidth. Guaranteed
timing.
4. In a datagram network, the responsibilities of the network layer include: (check all that apply).: packet
routing
host-to-host communication packet
forwarding
5. Routing would be more complicated if we used hardware addresses as network addresses.: True
6. The process of determining a path through the internet is called:: routing
7. In addition to a "default" entry, routing tables in an internet store...: the "first hop" in a path to each of the
networks known to the router
8. When a host in a network needs to obtain a valid IP address for itself, it broadcasts a "discover"
message that can be handled by a server,
which will "offer" an IP address within the correct domain.: Dynamic Host Configuration Protocol (DHCP)
9. A router's routing table is output by a routing algorithm .: routing algorithm
10.In a link between Host A, and Host B, we have three intermediary routers: Host A ----- Router Snucky ------
Router Jumpy ------ Router Po ------- Host B Host A's first hop router is:: Snucky
11.Where do network-layer protocols run?: Routers Mobile devices
Laptops
PCs
12.In a subnet, there are reserved IP addresses.: 2
13.What can cause packet queueing at a router's output port? (Check all that apply): Multiple data flows
requiring the same outbound link.
Slow outbound link transmission rate.
14.The process of moving a datagram from a router's input port to output port is handled by : switching fabric
1/
6
, cs 372 final Exam Review
15.The "Hop Limit" IPv6 header field indicates how many remaining hops to the destination.: False
16.The IPv6 header does not have a checksum.: True
17.The IPv6 address size is 128 bits.: True
18.In IPv6, there is no datagram fragmentation performed in the network core..: True
19.In IPv6, datagram fragmentation is : handled at the network edge
20.For the IPv4 CIDR address 153.10.22.56 /22 What is the...
Netmask:
Network Address:
Host Mask:
Broadcast Address:
Number of possible hosts:
Host Number:: 255.255.252.0
153.10.20.0
0.0.3.255
153.10.23.255
1022
568
21.ICMP messages are carried within the payload of IP datagrams.: True
22.When a destination host's IP fragment timer expires, it drops all accumu- lated fragments corresponding to
that timer.: True
23.ICMP can carry messages from... (Check all that apply): Router to Router Router to Sender Host
Source Host to Destination Host Destination
Host to Source Host
24.For a TCP/IP datagram coming into a home network through a NAPT device, which of the following header
fields (IP and/or TCP) are altered? (Check all that apply): Destination IP address
Destination Port Header
Checksum
25.The path MTU is the largest MTU on a path from sender to receiver.: False
26.The "traceroute" application (on Windows) sends ICMP messages by de- fault.: True
27.If hosting a server inside a NATed network, how do clients outside the NAPT router connect to the server?
(Check all that apply): Using Universal Plug and Play (UPnP)
Through a connection relay service
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