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- 1. Multiple Choice
UDP provides error checking, but not sequencing
True
False
- 2. Multiple Choice
IP is an unreliable, connectionless protocol, as it does not establish a session to send its packets.
True
False
- 3. Multiple Choice
IPv4 and IPv6 use the same packet format.
True
False
- 4. Multiple Choice
TCP uses a four-step process called a four-way handshake to establish a TCP connection.
True
False
- 5. Multiple Choice
The cost of upgrading infrastructure has been a major factor in the slow adoption of IPv6.
True
False
- 6. Multiple Choice
What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?
Connection-oriented Protocol
Sequencing and checksums
Framing
Flow Control
- 7. Multiple Choice
What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?
Differentiated Services (DiffServ)
Internet header length
(IHL)
Time to Live (TTL)
Padding
- 8. Multiple Choice
What command will list only current connections, including IP addresses and port numbers?
show ip stats
netstat -n
netstat -s
portstat
- 9. Multiple Choice
In a TCP segment, what field indicates how many bytes the sender can issue to a receiver before acknowledgment is received?
urgent pointer
sliding-window
URG flag
PSH flag
- 10. Multiple Choice
Which of the following is not a task handled by a router?
A router forwards broadcasts over the network.
A router can reroute traffic if the path of first choice is down but a second path is available
A router can interpret
Layer 3 and often Layer 4 addressing.
A router can connect dissimilar networks.
- 11. Multiple Choice
The IP connectionless protocol relies on what other protocol to guarantee delivery of data?
UDP
ICMP
TCP
ARP
- 12. Multiple Choice
You are connected to your network's Cisco router, and need to verify the route table. What command should you enter?
route print
show ip route
route -a
show route-table
- 13. Multiple Choice
What is the purpose of the checksum TCP field?
It specifies special options, such as the maximum segment size a network can handle.
It allows the receiving node to determine whether the TCP segment became corrupted during transmission.
It identifies the data segment's position in the stream of data segments being sent.
It confirms receipt of data via a return message to the sender.
- 14. Multiple Choice
What happens when a router receives a packet with a TTL of 0?
The router drops the packet and sends an ICMP TTL expired message back to the host.
The router attempts to forward the traffic on a local network.
The router resets the TTL to 128.
The router marks the
packet as corrupted and forwards it to the next hop.
- 15. Multiple Choice
Which command will produce statistics about each message transmitted by a host, separated according to protocol type?
ipconfig -s
netstat -s
ipstat -a
netstat -an
- 16. Multiple Choice
When using the Routing Information Protocol (RIP), what is the maximum number of hops a message can take between its source and its destination before the destination is considered unreachable?
8
15
20
32
- 17. Multiple Choice
What occurs when a collision happens on a network?
The collision goes
undetected, and data transmission continues.
The collision will create an error in the network switch, but otherwise, no issues will occur as a result.
Each node on the network stops transmitting, until manually told to reconnect and transmit.
Each node on the network waits a random amount of time and then resends the transmission.
- 18. Multiple Choice
You have been tasked with maintaining a network that is jumbo frame enabled. What does this mean?
The MTU for the network can be as high as 9198 bytes.
The network is not based on the Ethernet standard.
Fragmented frames will
be consolidated into whole frames before being sent.
The MTU for the network is set at 65,535 bytes.
- 19. Multiple Choice
What IPv6 field is similar to the TTL field in IPv4 packets?
flow label
next header
hop limit
distance vector
- 20. Multiple Choice
By default, what is the MTU size on a typical Ethernet network?
1492 bytes
1500 bytes
1518 bytes
1522 bytes
- 21. Multiple Choice
What routing metric affects a path's potential performance due to delay?
theoretical bandwidth
MTU
latency
load
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