Question 1

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

Accepted Answer

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.

Question 2

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

Accepted Answer

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

Question 3

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?

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

What occurs when a collision happens on a network?

Accepted Answer

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. 
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.

Question 6

The pathping utility sends 10 pings per hop by default.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

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. 
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.

Question 8

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

Accepted Answer

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

Question 9

What is MAC address spoofing?

Accepted Answer

MAC address spoofing is the impersonatio

Question 10

What is routing protocol convergence time defined as?

Accepted Answer

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. 
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.

Question 11

UDP provides error checking, but not sequencing.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

Some examples of routing metrics used to

Question 13

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

Accepted Answer

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. 
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.

Question 14

IPv4 and IPv6 use the same packet format.

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

The Border Gateway Protocol (BGP) is the

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

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. 
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.

Question 18

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

Accepted Answer

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. 
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.

Question 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

A) True 
 B)False

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

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

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?

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

What occurs when a collision happens on a network?

The pathping utility sends 10 pings per hop by default.

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

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

What is MAC address spoofing?

What is routing protocol convergence time defined as?

UDP provides error checking, but not sequencing.

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

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

IPv4 and IPv6 use the same packet format.

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

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

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

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

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

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

Introduction to Networking

Network Infrastructure and Documentation

Addressing on Networks

Network Cabling

Wireless Networking

Virtualization and Cloud Computing

Subnets and VLANs

Network Risk Management

Security in Network Design

Network Performance and Recovery

Wide Area Networks

Filters

Exam 4: Network Protocols and Routing

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

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

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?

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

What occurs when a collision happens on a network?

The pathping utility sends 10 pings per hop by default.

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

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

What is MAC address spoofing?

What is routing protocol convergence time defined as?

UDP provides error checking, but not sequencing.

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

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

IPv4 and IPv6 use the same packet format.

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

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

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

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

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

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

Introduction to Networking

Network Infrastructure and Documentation

Addressing on Networks

Network Cabling

Wireless Networking

Virtualization and Cloud Computing

Subnets and VLANs

Network Risk Management

Security in Network Design

Network Performance and Recovery

Wide Area Networks

Filters