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What command will list only current connections, including IP addresses and port numbers?


A) show ip stats
B) netstat -n
C) netstat -s
D) portstat

E) A) and C)
F) C) and D)

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B

Routing Information Protocol (RIP) is an interior gateway protocol that uses a link-state algorithm.

A) True
B) False

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The pathping utility sends 10 pings per hop by default.

A) True
B) False

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There are several interior gateway protocols, but only one current exterior gateway protocol. What is this protocol, and what characteristics does it have?

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The Border Gateway Protocol (BGP) is the...

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You are connected to your network's Cisco router, and need to verify the route table. What command should you enter?


A) route print
B) show ip route
C) route -a
D) show route-table

E) A) and D)
F) B) and D)

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The Border Gateway Protocol is considered to be a hybrid routing protocol.

A) True
B) False

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IPv4 and IPv6 use the same packet format.

A) True
B) False

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What occurs when a collision happens on a network?


A) The collision goes undetected, and data transmission continues.
B) The collision will create an error in the network switch, but otherwise, no issues will occur as a result.
C) Each node on the network stops transmitting, until manually told to reconnect and transmit.
D) Each node on the network waits a random amount of time and then resends the transmission.

E) A) and B)
F) A) and C)

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What is routing protocol convergence time defined as?


A) It is the time it takes for the protocol to recognize the best path in the event of a network change.
B) It is the time it takes for the protocol to recognize that a change has occurred.
C) It is the amount of time it takes after initial configuration of the protocol for all routes to become known.
D) It is the amount of time involved in configuration of the routing protocol.

E) A) and B)
F) B) and C)

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Which of the following is not a task handled by a router?


A) A router forwards broadcasts over the network.
B) A router can reroute traffic if the path of first choice is down but a second path is available.
C) A router can interpret Layer 3 and often Layer 4 addressing.
D) A router can connect dissimilar networks.

E) All of the above
F) C) and D)

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How can a network switch be said to operate at Layer 4 of the OSI model?

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A Layer 4 switch is capable of interpreting Layer 4 data. They operate anywhere between Layer 4 and Layer 7 and are also known as content switches or application switches. Among other things, the ability to interpret higher layer data enables switches to perform advanced filtering, keep statistics, and provide security functions. In general, however, a Layer 4 switch is still optimized for fast Layer 2 data handling.

UDP provides error checking, but not sequencing.

A) True
B) False

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What happens when a router receives a packet with a TTL of 0?


A) The router drops the packet and sends an ICMP TTL expired message back to the host.
B) The router attempts to forward the traffic on a local network.
C) The router resets the TTL to 128.
D) The router marks the packet as corrupted and forwards it to the next hop.

E) A) and D)
F) C) and D)

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What is MAC address spoofing?

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MAC address spoofing is the impersonatio...

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Which statement regarding the Border Gateway Protocol (BGP) is accurate?


A) BGP is limited to a single autonomous system.
B) BGP is exclusively a distance-vector protocol.
C) BGP utilizes TCP for communicating updates.
D) BGP is a more advanced version of OSPF.

E) C) and D)
F) A) and C)

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What are some examples of routing metrics that can be used to determine the best path for a network?

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Some examples of routing metrics used to...

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What utility is the equivalent to the pathping command on a Linux system?


A) mtr
B) tracepath
C) traceroute
D) hping

E) B) and D)
F) A) and B)

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Which statement does NOT accurately describe characteristics of the OSPF protocol?


A) OSPF maintains a database of other routers' links.
B) OSPF has no hop limits on a transmission path.
C) OSPF provides low network overhead.
D) OSPF requires very little CPU or memory resources.

E) A) and B)
F) B) and C)

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What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet?


A) Differentiated Services (DiffServ)
B) Internet header length (IHL)
C) Time to Live (TTL)
D) Padding

E) None of the above
F) B) and C)

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Routing protocols that enable routers to communicate beyond neighboring routers, allowing each router to independently map the network, are known as which type of protocols?


A) interior gateway protocols
B) border gateway protocols
C) distance vector protocols
D) link-state protocols

E) A) and B)
F) A) and C)

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D

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