CIT 2523 - Unit 3
What is another name for wildcard bits?
Inverse mask bits
Which of the following is not an advantage of OSPF?
It is very easy to implement.
Which of the following is true of VLSM?
It minimizes wasted IP address space when interconnecting subnets.
In OSPF, route updates are sent in the form of which of the following?
Link state advertisements
What do link state protocols issue to update neighbor routers regarding route status? - Link state advertisements - Adjacencies - Hop status - Hello packets
Link state advertisements
A multihomed customer has which of the following?
More than one Internet connection
What version of OSPF is used with IPv6?
OSPFv3
RIP permits a maximum of 15 hops to prevent what?
Routing loops
Which of the following is a key feature of link state protocols? - Using a hop count metric to determine the best route to a destination - Sending updates every 90 seconds - Using link lights to establish adjacencies - Sending update when routing changes
Sending update when routing changes
What is the difference between a static routing protocol and a dynamic routing protocol?
Static means fixed routes. Dynamic means routing tables are dynamically updated to account for loss or changes in routes.
Which of the following best characterizes variable-length subnet masks?
They minimize wasted IP address space when interconnecting subnets.
A computer with IP address 10.10.5.1 sends a data packet with destination IP address 10.10.5.20 using subnet mask 255.255.255.0. The packet stays in the LAN.
True
A computer with IP address 10.10.5.1 sends a data packet with destination IP address 10.5.10.10 and subnet mask 255.0.0.0. The packet stays in the LAN.
True
A routing table is a list of IP addresses to which data traffic can be forwarded.
True
FF02::5 is used for all OSPF routers.
True
Peering is an agreement made for the exchange of data traffic between large and small ISPs or, as in this case, between a router and its neighbor router.
True
Route flapping is a situation in which intermittent routes go up and down, creating excessive LSA updates
True
Route flapping means intermediate routers are going up and down, creating excessive LSA updates.
True
Router(config)# ipv6 route 2001:0db8:ABCD::/32 FA0/0 This command configures a static route to the network 2001:0db8:ABCD::/32 via the FA0/0 interface.
True
Routing protocols use "hello packets" to verify that a link from one router to another is active.
True
Routing tables exchanged with EIGRP happen when routes change.
True
The command "ipv6 router rip [rip_tag]" enables RIPng on Cisco routers.
True
The command network 10.10.0.0 is entered on a router after EIGRP has been enabled. This means all interfaces on the router that have a 10.x.x.x address will participate in EIGRP.
True
The command that can be used to verify that routers are connected via BGP is sh ip bgp sum.
True
The command to create an IPv6 static route for 2001:0db8:1234::/32 from the FA0/0 interface that gives the link-local next hop address, specified with the fe80::1 prefix. Router(config)# ipv6 route 2001:0db8:1234::/32 FA0/0 fe80::1
True
The following command configures the router to be area 0, the backbone (area 0.0.0.0). Router(config-if)# ipv6 ospf 50 area 0.0.0.0
True
The following route command is used to configure a static route for a router.ip route [destination] [subnet mask] [next hop]
True
The four key issues in dynamic routing protocols are path determination, metric, convergence, and load balancing.
True
The hop count is the number of routers a data packet must pass through to reach the destination.
True
The multicast address for RIPng uses the IPv6 multicast address FF02::9 for all RIP updates.
True
The network shown in Figure 9-16 is an example of a contiguous network.
True
The purpose of a wide area network connection is to link remote sites and branch offices to the main network.
True
The router command "show ip route" is used to view the routes entered in a router's routing table.
True
The that command is used to show BGP routes is sh ip route.
True
You use the following to create a static route for 2001:0db8:1234::/32 that points to the global network 2001:0db8:ABCD::1. Router(config)# ipv6 route 2001:0db8:1234::/32 2001:0db8:ABCD::1
True
A static route is configured to route data from LAN A to LAN B on Router1 in the Figure. Which of the following are appropriate static routes to achieve this goal? (Select all that apply.) - ip route 10.10.16.0 255.255.255.0 10.10.10.2 - ip route 10.10.16.0 255.255.255.255 10.20.100.2 - ip route 10.10.16.0 255.255.255.255 10.10.10.2 - ip route 10.10.16.0 255.255.255.0 10.20.100.2
- ip route 10.10.16.0 255.255.255.0 10.10.10.2 - ip route 10.10.16.0 255.255.255.0 10.20.100.2
List two static routes to route data from LAN B to LAN C in the network shown in the Figure, assuming the subnet mask 255.255.255.0. - ip route 10.10.200.0 255.255.255.0 10.50.10.2 - ip route 10.10.200.0 255.255.255.0 10.20.100.2 - ip route 10.10.200.0 255.255.255.0 10.20.100.1 - ip route 10.10.200.0 255.255.255.0 10.10.10.2
- ip route 10.10.200.0 255.255.255.0 10.50.10.2 - ip route 10.10.200.0 255.255.255.0 10.20.100.1
What is the router command to configure a static route from LAN A to LAN B for the network shown in Figure?
- ip route 10.10.80.0 255.255.255.0 10.10.100.2
All connected routes from a router have a distance, or hop count, of what value? - 255 - 0 - 1 - 150
0
Which of the following is an example of a classful address? - 10.1.0.0 - 172.0.0.0 - 10.10.0.0 - 10.0.0.0
10.0.0.0
Which of the following are suitable subnet masks for use in configuring static routes for the network shown in the Figure? Select the best answer. - 255.255.0.0 - 255.255.255.224 - 255.0.0.0 - All of these are correct
All of these are correct
The command show ip interface brief is used on a router to do which of the following? - None of these answers are correct. - Check the status of the interfaces - All these answers are correct. - Check the assigned IP addresses for the interface - Check the current configuration of the interfaces
All these answers are correct.
BGP is considered to be which of the following?
An external routing protocol
What does EIGRP stand for?
Enhanced Interior Gateway Routing Protocol
A totally stubby area is an area of a network that does not accept routes from the Internet.
False
FF01::5 is used for all OSPF routers.
False
The following route command is used to configure a static route for a router. ip route [next hop] [subnet mask] [destination]
False
The hop count is the number of switches a data packet must pass through to reach the destination.
False
The OSPF routing protocol uses which of the following to verify that a link between two routers is active and the routers are communicating?
Hello packets
Determine the hop count for Router2 to subnet B in the Figure.
Hop count = 0, because it is connected.
For the network shown, what is the hop count from Router3 to subnet A?
Hop count = 2
For the network shown, what is the hop count from Router5 to subnet G?
Hop count = 2
What is meant by a 0.0.0.0 network address entry with subnet mask 0.0.0.0 in a PC's routing table? - This is a dynamic route. - It is the gateway of last resort for any IP address and any subnet mask. - This is a default route. - Nothing.
- It is the gateway of last resort for any IP address and any subnet mask. - This is a default route.
What are the four components of EIGRP? - Neighbor Discovery/Recovery - Reliable Transport Protocol - DUAL Finite State Machine - protocol-dependent modules - None of these answers are correct.
- Neighbor Discovery/Recovery - Reliable Transport Protocol - DUAL Finite State Machine - protocol-dependent modules
What command is used to view a PC's routing table? (Multi-Select)
netstat -r route print
Assuming that OSPF has been enabled, which of the following is not used for configuring a route to run over OSPF?
network 10.0.0.0 0.0.255.255
What is the command for enabling EIGRP on a router?
router eigrp [as_number]
Which of the following is the command syntax for enabling OSPF routing on a router?
router ospf [number]
What is the router command for enabling the RIP routing protocol on a router?
router rip
What router command verifies whether EIGRP is running on a router?
show ip protocol
Which router command displays the configured routes on a router?
show ip route
Which router command displays the number of subnets configured?
show ip route
What command is used to display a router's current running configuration?
show running-config
What is the router command for displaying the startup configuration?
show startup-config
Area 0 is ____.
the root, or backbone, for a network
The command show ip route is used on a router to do what?
Display the configured routes
The command show ip route is used on a router to do which of the following? (Select all that apply.) - Set a static route - Display how often routing updates are sent - Display the configured routes on a router - Configure a static route
Display the configured routes on a router
A router has three network routes to a destination. The routing protocols used for the paths are OSPF, EIGRP, and RIP. Based on administrative distance, what is the routing protocol with the smallest default distance value?
EIGRP
In a distance vector protocol, the neighboring routers update their routing table based on what received information? - All of these answers are correct. - The list of neighboring routers - The hop count of each router - The cost of each route
The list of neighboring routers
