NetAcad Ch7-10 Assessment

What will happen if the default gateway address is incorrectly configured on a host? A he host cannot communicate with hosts in other networks. B. The host will have to use ARP to determine the correct address of the default gateway. C. The switch will not forward packets initiated by the host. D. A ping from the host to 127.0.0.1 would not be successful. E. The host cannot communicate with other hosts in the local network.

A he host cannot communicate with hosts in other networks.

What remote access method uses encryption? A. SSH B. Console C. FTP D. AUX E. Telnet

A. SSH

Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer? A. Neighbor table B. ARP cache C. Routing table D. MAC address table

B. ARP cache

What statement describes the function of the Address Resolution Protocol? A. ARP is used to discover the MAC address of any host on a different network. B. ARP is used to discover the IP address of any host on the local network. C. ARP is used to discover the IP address of any host on a different network. D. ARP is used to discover the MAC address of any host on the local network.

B. ARP is used to discover the IP address of any host on the local network.

A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued? A. The current content of the ARP cache is displayed. B. The ARP cache is cleared. C. The ARP cache is synchronized with the router interface. D. The detailed information of the ARP cache is displayed.

B. The ARP cache is cleared.

Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100? A. Protocol B. Source IPv4 address C. TTL D. Version

D. Version

Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly?

Time-To-Live (TTL)

Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address? A. Protocol B. TTL C. Header Checmsum D. Destination IPv4 Address

D. Destination IPv4 Address

What is one advantage that the IPv6 simplified header offers over IPv4? A. Smaller-sized header B. Little requirement for processing checksums C. Smaller-sized source and destination IP addresses D. Efficient packet handling

D. Efficient packet handling

When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation? A. Next Header B. Traffic Class C. Differentiated Services D. Flow Label

D. Flow Label

Which statement describes a feature of the IP protocol? A. IP relies on Layer 2 protocols for transmission error control. B. IP encapsulation is modified based on network media. C. MAC addresses are used during the IP packet encapsulation. D. IP relies on upper layer services to handle situations of missing or out-of-order packets.

D. IP relies on upper layer services to handle situations of missing or out-of-order packets.

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem? A. The computer has an incorrect subnet mask. B. The computer has an invalid IP address. C. The cable is not connected properly to the NIC. D. The computer has an invalid default gateway address.

D. The computer has an invalid default gateway address.

Within a production network, what is the purpose of configuring a switch with a default gateway address? A. A switch must have a default gateway to be accessible by Telnet and SSH. B. It provides a next-hop address for all traffic that flows through the switch. C. Hosts that are connected to the switch can use the switch default gateway address to forward packets to a remote destination. D. The default gateway address is used to forward packets originating from the switch to remote networks.

D. The default gateway address is used to forward packets originating from the switch to remote networks.

What property of ARP causes the request to be flooded out all ports of a switch except for the port receiving the ARP request? A. ARP replies are broadcast on the network when a host receives an ARP request. B. Entries in an ARP table are time-stamped and are purged after the timeout expires. C. The type field 0x806 appears in the header of the Ethernet frame. D. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

D. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

What property of ARP forces all Ethernet NICs to process an ARP request? A. ARP replies are broadcast on the network when a host receives an ARP request. B. The source MAC address appears in the header of the Ethernet frame. C. The type field 0x806 appears in the header of the Ethernet frame. D. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

D. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command? A. The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1. B. The switch can communicate with other hosts on the 172.16.100.0 network. C. The switch will have a management interface with the address 172.16.100.1. D. The switch can be remotely managed from a host on another network.

D. The switch can be remotely managed from a host on another network.

Which statement describes the treatment of ARP requests on the local link? A. They are received and processed only by the target device. B. They are dropped by all switches on the local network. C. They must be forwarded by all routers on the local network. D. They are received and processed by every device on the local network.

D. They are received and processed by every device on the local network.

Correctly order the following choices of the boot up process of a Cisco Router. Not all options are used (choose three) Enter setup mode locate and load the Cisco IOS software Locate and load the startup configuration software Perform the POST and load the boostrap program

1. Perform the POST and load the boostrap program 2. locate and load the Cisco IOS software 3. Locate and load the startup configuration software

Why is NAT not needed in IPv6?​ A. Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​ B. The end-to-end connectivity problems that are caused by NAT are solved because the number of routes increases with the number of nodes that are connected to the Internet. C. Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks.​ D. The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.​

A. Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table? A. Entries in an ARP table are time-stamped and are purged after the timeout expires. B. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch. C. The type field 0x806 appears in the header of the Ethernet frame. D. A static IP-to-MAC address entry can be entered manually into an ARP table.

A. Entries in an ARP table are time-stamped and are purged after the timeout expires.

Which two types of IPv6 messages are used in place of ARP for address resolution? A. Neighbor advertisement B. Neighbor solicitation C. Echo request D. Echo reply E. Anycast F. Broadcast

A. Neighbor advertisement B. Neighbor solicitation

Which two functions are primary functions of a router? (Choose two.) A. Path Selection B. Packet forwarding c. Domain name resolution D. Microsegmentation E. Flow control

A. Path Selection B. Packet forwarding

Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device? A. Source IPv4 address B. Protocol C. Header checksum D. TTL

A. Source IPv4 address

Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.) A. The destination address is unknown to the switch. B. The frame has the broadcast address as the destination address. C. The source address in the frame header is the broadcast address. D. The destination address in the frame is a known unicast address. E. The source address in the frame is a multicast address.

A. The destination address is unknown to the switch. B. The frame has the broadcast address as the destination address.

What access method would be described as remote access via a dialup connection?

AUX

What happens when the transport input ssh command is entered on the switch vty lines? A. The SSH client on the switch is enabled. B. Communication between the switch and remote users is encrypted. C. The switch requires remote connections via a proprietary client software. D. The switch requires a username/password combination for remote access.

B. Communication between the switch and remote users is encrypted.

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured? A. Power cycle the device. B. Exit privileged EXEC mode and press Enter . C. Reboot the device. D. Exit global configuration mode. E. Enter CTRL-Z at the privileged mode prompt.

B. Exit privileged EXEC mode and press Enter .

Which destination address is used in an ARP request frame? A. 0.0.0.0 B. FFFF.FFFF.FFFF C. The physical address of the destination host D. AAAA.AAAA.AAAA E. 255.255.255.255

B. FFFF.FFFF.FFFF

What property of ARP allows hosts on a LAN to send traffic to remote networks? A. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame. B. Local hosts learn the MAC address of the default gateway. C. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch. D. The source MAC address appears in the header of the Ethernet frame.

B. Local hosts learn the MAC address of the default gateway.

What are two potential network problems that can result from ARP operation? (Choose two.) A. Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing. B. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic. C. Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network. D. On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. E. Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port.

B. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic. D. On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays.

What routing table entry has a next hop address associated with a destination network? A. C and L source routes B. Remote routes C. Directly-connected routes D. Local routes

B. Remote routes

What are two services provided by the OSI network layer? (Choose two.) A. Collision detection B. Routing packets toward the destination C. Performing error detection D. Encapsulating PDUs from the transport layer E. Placement of frames on the media

B. Routing packets toward the destination D. Encapsulating PDUs from the transport layer

A router boots and enters setup mode. What is the reason for this? A. Cisco IOS is missing from flash memory. B. The configuration file is missing from NVRAM. C. The POST process has detected hardware failure. D. The IOS image is corrupt.

B. The configuration file is missing from NVRAM.

What is the effect of using the Router# copy running-config startup-config command on a router? A. The contents of ROM will change. B. The contents of NVRAM will change. C. The contents of flash will change. D. The contents of RAM will change.

B. The contents of NVRAM will change.

What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process? A. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame. B. The type field 0x806 appears in the header of the Ethernet frame. C. Entries in an ARP table are time-stamped and are purged after the timeout expires. D. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

B. The type field 0x806 appears in the header of the Ethernet frame.

Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.) A. enable secret cisco B. line console 0 C. line vty 0 4 D. login E. password cisco F. interface fastethernet 0/0

B. line console 0 D. login E. password cisco

What is a basic characteristic of the IP protocol? A. Media dependent B. User data segmentation C. Connectionless D. Reliable end-to-end delivery

C. Connectionless

Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet? A. Destination IP Address B. Protocol C. Differentiated Services D. Source IP Address

C. Differentiated Services

What Ipv4 Header field identifies the upper layer protocol carried in the packet? A. Version B. Differentiated Services C. Protocol D. Identification

C. Protocol

What information does the loopback test provide? A. The device has the correct IP address on the network B. The Ethernet cable is working correctly C. The TCP/IP stack on the device is working correctly D. DHCP is working correctly E. The device has end-to-end connectivity

C. The TCP/IP stack on the device is working correctly

Which parameter does the router use to choose the path to the destination when there are multiple routes available? A. The higher gateway IP address to get to the destination network B. The lower gateway IP address to get to the destination network C. The lower metric value that is associated with the destination network D. The higher metric value that is associated with the destination network

C. The lower metric value that is associated with the destination network

What are two functions of NVRAM? (Choose two.) A. To store the ARP table B. To contain the running configuration file C. To store the startup configuration file D. To store the routing table E. To retain contents when power is removed

C. To store the startup configuration file E. To retain contents when power is removed

What is the preferred out-of-band access method?

Console

How do hosts ensure that their packets are directed to the correct network destination? A. They search in their own local routing table for a route to the network destination address and pass this information to the default gateway. B. They always direct their packets to the default gateway, which will be responsible for the packet delivery. C. They send a query packet to the default gateway asking for the best route. D. They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

D. They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

What is the aim of an ARP spoofing attack? A. To fill switch MAC address tables with bogus addresses B. To flood the network with ARP reply broadcasts C. To overwhelm network hosts with ARP requests D. To associate IP addresses to the wrong MAC address

D. To associate IP addresses to the wrong MAC address

What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward? A. Source IP address B. Destination IP address C. Source MAC address D. Ethernet type E. Destination MAC address

E. Destination MAC address

Which access method is considered insecure? A. SSH B. Console C. FTP D. AUX E. Telnet

E. Telnet