CCNA 2, Chapters 1-6 Review
An administrator issues the ipv6 route 2001:db8:acad:1::/32 gigabitethernet 0/0 2001:db8:acad:6::1 100 command on a router. What administrative distance is assigned to this route?
100
A company has several networks with the following IP addresses requirements: IP phones-50, PCs-70, IP cameras-10, wireless access points-10, network printers-10, network scanners-2. Which block of addresses would be the minimum to accommodate all of these devices if each type of device was on its own network?
172.16.0.0/24
What are two functions of a router?
A router connects multiple IP networks It determines the best path to send packets
A small college uses VLAN 10 for the classroom network and VLAN 20 for the office network. What is needed to enable communication between these two VLANs while using legacy Inter-VLAN routing?
A router with at least two LAN interfaces should be used.
A high school uses VLAN 15 for the laboratory network and VLAN 30 for the faculty network. What is required to enable communication between these two VLANs while using router-on-a-stick approach?
A switch with a port that is configured as a trunk is needed when connecting to the router
Which two statements correctly describe the concepts of administrative distance and metric? (2)
Administrative distance refers to the trustworthiness of a particular route. Routes with the smallest metric to a destination indicate the best path.
Which dynamic routing protocol was developed to interconnect different Internet service providers?
BGP
A network administrator is determining the best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking?
Between two switches that utilize multiple VLANs Between a switch and a server that has an 802.1Q NIC
What is different between IPv6 routing table entries compared to IPv4 routing table entries?
By design IPv6 is classless so all routes are effectively level 1 ultimate routes
Which route would be automatically created when a router interface is activated and configured with an IP address? - D 10.16.0.0/24 [90/3256] via 192.168.6.9 - C 192.168.0.0/24 is directly connected, FastEthernet 0/0 - S 192.168.1.0/24 is directly connected, FastEthernet 0/1 - O 172.16.0.0/16 [110/65] via 192.168.5.1
C 192.168.0.0/24 is directly connected, FastEthernet 0/0
Which packet-forwarding method does a router use to make switching decisions when it is using a forwarding information base and an adjacency table?
Cisco Express Forwarding
Which two statements are true regarding switch port security?
Dynamically learned secure MAC addresses are lost when the switch reboots If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached
A network designer must provide a rationale to a customer for a design which will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make it the better choice?
Easier to provide redundant links to ensure higher availability Simpler deployment for additional switch equipment
What must the network administrator do to remove Fast Ethernet port Fa0/1 from VLAN 2 and assign it to VLAN 3?
Enter the switchport access vlan 3 command in interface configuration mode
What is the destination address in the header of a broadcast frame?
FF-FF-FF-FF-FF-FF
In order for packet to be sent to a remote destination, what three pieces of information must be configured on a host?
IP address subnet mask default gateway
What two pieces of information are displayed in the output of the show ip interface brief command?
IP addresses Layer 1 statuses
Which statement describes the port speed LED on the Cisco Catalyst 2960 switch?
If the LED is green, the port is operating at 100 Mb/s
What does a router uses as the MAC address of the destination when constructing the frame that will go from the router to another device?
If the destination MAC address that corresponds to the IPv4 address is not in the ARP cache, the router sends an ARP request.
What are two advantages of modular switches over fixed-configuration switches?
Increased scalability Need for fewer power outlets
What two criteria are used by a Cisco LAN switch to decide how to forward Ethernet frames?
Ingress port destination MAC address
Which action will bring an error-disabled switch port back to an operational state?
Issue the shutdown and then no shutdown interface commands
A cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a switchport trunk allowed vlan 30 command on Fa0/5?
It allows only VLAN 30 on Fa0/5
What is a disadvantage of using router-on-a-stick inter-VLAN routing?
It does not scale well beyond 50 VLANs
What is a characteristic of a static route that matches all packets?
It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route.
What is the purpose of the network command when configuring RIPv2 as the routing protocol?
It identifies the interfaces that belong to a specific network
What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?
It is a logical interface internal to the router
Consider the following routing table entry for R1: D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0 What is the significance of the Serial 0/0/0?
It is the interface on R1 used to send data that is destined for 10.1.1.0/24
Consider the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.2 5 How would and administrator test this configuration?
Manually shut down the router interface used as a primary route
A network administrator enters the command copy running-config startup-config. Which type of memory will the startup configuration be placed into?
NVRAM
When a Cisco switch receives untagged frames on a 802.1Q trunk port, which VLAN ID is the traffic switched to by default?
Native VLAN ID
Which route would be used to forward a packet with a source IP address of 192.168.10.1 and a destination IP address of 10.1.1.1? - C 192.168.10.0/30 is directly connected, GigabitEthernet0/1 - S 10.1.0.0/16 is directly connected, GigabitEthernet0/0 - O 10.1.1.0/24 [110/65] via 192.168.200.2, 00:01:20, Serial0/1/0 - S* 0.0.0.0/0 [1/0] via 172.16.1.1
O 10.1.1.0/24 [110/65] via 192.168.200.2, 00:01:20, Serial0/1/0
If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collision be observed?
On the half-duplex end of the connection
A production switch is reloaded and finishes with a Switch> prompt. What two facts can be determined?
POST occurred normally A full version of the Cisco IOS was located and loaded
Which two statements are true about using full-duplex Fast Ethernet?
Performance is improved with bidirectional data flow Full-duplex Fast Ethernet offers 100 percent efficiency in both directions
Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?
Port Fa0/11 will be returned to VLAN 1
Where are dynamically learned MAC addresses stored when sticky learning is enabled with the switchport port-security mac-address sticky command?
RAM
Which routing protocol is limited to smaller network implementations because it does not accommodate growth for larger networks?
RIP
Which route is the best match for a packet entering a router with a destination address of 10.16.0.2? S 10.0.0.0/8 [1/0] via 192.168.0.2 S 10.16.0.0/24 [1/0] via 192.168.0.9 S 10.16.0.0/16 is directly connected, Ethernet 0/1 S 10.0.0.0/16 is directly connected, Ethernet 0/0
S 10.16.0.0/24 [1/0] via 192.168.0.9
The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table?
S 172.16.1.0 [1/0] via 172.16.2.2
What are three primary benefits of using VLANs?
Security Cost reduction Improved IT staff efficiency
A small publishing company has a network design such that when the broadcast is sent on the LAN, 200 devices receive the transmitted broadcast. How can the network administrator reduce the number of devices that receive broadcast traffic.
Segment the LAN into smaller LANs and route between them
Which two statements are true regarding classless routing protocols?
Sends subnet mask information in routing updates Allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology
What are two advantages of static routing over dynamic routing?
Static routing is more secure because it does not advertise over the network. Static routing uses fewer router resources than dynamic routing.
What is one difference between using Telnet and SSH to connect to a network device for management purposes?
Telnet sends a username and password in plain text, whereas SSH encrypts the username and password
A network administrator configures the interface fa0/0 on the router R1 with the command ip address 172.16.1.254 255.255.255.0. However, when the administrator issues the command show ip route, the routing table does not show the directly connected network. What is the possible cause of the problem?
The interface fa0/0 has not been activated.
While configuring RIPv2 on an enterprise network, an engineer enters the command network 192.168.10.0 into router configuration mode. What is the result of entering this command?
The interface of the 192.168.10.0 network is sending only version 2 updates
What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch?
The port becomes inactive
What is a characteristic of legacy inter-VLAN routing?
The router requires one Ethernet link for each VLAN
Which two characteristics match extended range VLANs?
They are saved in the running-config file by default VLAN IDs exist between 1006 to 4094
What is a disadvantage of using dynamic routing protocols?
They send messages about network status insecurely across networks by default.
What are two reasons a network administrator would segment a network with a Layer 2 switch?
To enhance user bandwidth To isolate traffic between segments
A network administrator configures a static route on the edge router of a network to assign a gateway of last resort. How would a network administrator configure the edge router to automatically share this route within RIP?
Use the default-information originate command
Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure?
User data traffic VoIP phone traffic
Which interface is the default location that would contain the IP address used to manage a 24-port Ethernet switch?
VLAN 1
A router is configured to participate in multiple routing protocol: RIP EIGRP, and OSPF. The router must send a packet to a network 192.168.14.0. Which route will be used to forward the traffic? a 192.168.14.0/26 route that is learned via RIP a 192.168.14.0/24 route that is learned via EIGRP a 192.168.14.0/25 route that is learned via OSPF a 192.168.14.0/25 route that is learned via RIP
a 192.168.14.0/26 route that is learned via RIP it's the one with the longest bit match
What is collapsed core in a network design?
a combination of the functionality of the distribution and core layers
What are two common types of static routes in routing tables? (2)
a default static route a static route to a specific network
What route would have the lowest administrative distance?
a directly connected network
Which solution would help a college alleviate network congestion due to collisions?
a high port density switch
A destination route in the routing table is indicated with a code D. Which kind of route is this?
a route dynamically learned through the EIGRP routing protocol
Consider the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.2 5 Which route would have to go down in order for this static route to appear in the routing table? - a default route - a static route to the 192.168.10.0/24 network - an OSPF-learned route to the 192.168.10.0/24 network - an EIGRP-learned route to the 192.168.10.0/24 network
a static route to the 192.168.10.0/24 network
What is a basic function of the Cisco Borderless Architecture distribution layer?
aggregating Layer 3 routing boundaries
What is the purpose of the passive-interface command?
allows a router to receive routing updates on an interface but not send updates via that interface
Which type or route will require a router to perform a recursive lookup?
an ultimate route that is using a next hop IP address on a router that is not using CEF
Which two parameters are used by EIGRP as metrics to select the best path to reach a network? (2)
bandwidth delay
Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch?
boot system
Which two requirements are used to determine of a route can be considered as an ultimate route in a router's routing table? (2)
contain an exit interface contain a next-hop IP address
A __________ network is one that uses the same infrastructure to carry voice, data, and video signals.
converged
What type of route allows a router to forward packets even through its routing table contains no specific route to the destination network?
default route
Which of the following items are used by a host device when performing ANDing operation to determine if a destination address is on the same local network?
destination IP address subnet mask
What is one function of a Layer 2 switch?
determine which interface is used to forward a frame based on the destination MAC address
Which type of static route that is configured on a router uses only the exit interface?
directly connected static route
What is a definition of a two-tier LAN network design?
distribution and core layers collapsed into one tier, and the access layer on a separate tier
What is the effect of using the switchport port-security command?
enables port security on an interface
A local law firm is redesigning the company network so that all 20 employees can be connected to a LAN and to the Internet. The law firm would prefer a low cost and easy solution for the project. What type of switch should be selected?
fixed configuration
What is the correct syntax of a floating static route? - ip route 209.165.200.228 255.255.255.248 serial 0/0/0 - ip route 209.165.200.228 255.255.255.248 10.0.0.1 120 - ip route 0.0.0.0 0.0.0.0 serial 0/0/0 - ip route 172.16.0.0 255.248.0.0 10.0.0.1
ip route 209.165.200.228 255.255.255.248 10.0.0.1 120
Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?
native
Exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2?
no ip route 10.0.0.0 255.0.0.0 172.16.40.2 ip route 10.0.0.0 255.0.0.0 192.168.1.2
Which command is used to remove only VLAN 20 from a switch?
no vlan 20
When would it be more beneficial to use static routing instead of dynamic routing protocols?
on a network where dynamic updates would pose a security risk
When would it be more beneficial to use a dynamic routing protocols instead of static routing?
on a network where there is a lot of topology changes
Which three IOS troubleshooting commands can help to isolate problems with a static route? - show version - ping - tracert - show ip route - show ip interface brief - show arp
ping show ip route show ip interface brief
A network administrator configures the port security feature on a switch. The security policy specifies that each access port should allow up to two MAC addresses. When the maximum number of MAC addresses is reached, a frame with the unknown source MAC address is dropped and a notification is sent to the syslog server. Which security violation mode should be configured for each access port?
restrict
Which network device can server as a boundary to divide a Layer 2 broadcast domain?
router
When a router receives a packet, it examines the destination address of the packet and looks in the __________ table to determine the best path to use to forward the packet.
routing
A network administrator has entered a static route to an Ethernet LAN that is connected to an adjacent router. However, the route is not shown in the routing table. Which command would the administrator use to verify that the exit interface is up?
show ip interface brief
The __________ command displays the VLAN assignment for all ports as well as the existing VLANs on the switch.
show vlan
Which type of address does a switch use to build the MAC address table?
source MAC address
Which network device can be used to eliminate collision on an Ethernet network?
switch
Which software is used for a network administrator to make the initial router configuration securely?
terminal emulation client software
Which statement describes a result after multiple Cisco LAN switches are interconnected?
the broadcast domain expands to all switches.
What two pieces of information are needed in a fully specified static route to eliminate recursive lookups?
the interface ID exit interface the IP address of the next-hop neighbor
What occurs next in the router lookup process after a router identifies a destination IP address and locates a matching level 1 parent route?
the level 2 child routes are examined
What does the term "port density" represent for an Ethernet switch?
the number of available ports
What happens to a static route entry in a routing table when the outgoing interface associated with that route goes into the down state?
the static route is removed from the routing table
Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?
to be used as a backup route
what is the effect of configuring the ipv6 unicast-routing command on a router?
to enable the router as an ipv6 router
A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?
to provide a route to forward packets for which there is no route in the routing table
What is a function of the switch boot loader?
to provide an environment to operate in when the switch operating system cannot be found
When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where should the IP address be assigned?
to the subinterface
What two tasks do dynamic routing protocols perform? (2)
update and maintain routing tables network discovery
In which situation would a technician use the show interfaces switch command?
when packets are being dropped from a particular directly attached host
