7.5.11 Practice Questions

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2/18/24, 9 : 15 PM Individual Response Page 1 of 12 about:srcdoc 7.5.11 Practice Questions Candidate: Joseph Vincent (jvince13) Date: 2/18/2024, 9:15:22 PM • Time Spent: 01:40 Score: 100% Passing Score: 80% Question 1. Correct Which of the following BEST describes dynamic routing? Routing is done within an autonomous system. Routing is done between autonomous systems. Routers learn about networks by sharing routing information with each other. Routing entries are manually added to routing tables. Explanation

2/18/24, 9 : 15 PM Individual Response Page 2 of 12 about:srcdoc In dynamic routing, routers dynamically learn about networks by sharing routing information with other routers through dynamic routing protocols. Dynamic routing protocols automatically add entries to the routing table. Interior routing is done within an autonomous system. With interior routers, you own and control the router, determine where routers are located, and control the interfaces that connect the routers to your system. Static routing entries are manually added to the routing table. Static entries remain in the routing table until they are manually removed. Exterior routing is done between autonomous systems. In most organizations, exterior routing is limited to a single router that connects the organization's network to the internet via an ISP. This router is often called a border router or an edge router. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_dynamic_np6.question.fex Question 2. Correct Jake is a network administrator for a hospital. There is medical equipment that relies on having uninterrupted internet connectivity. Which of the following types of routing protocols should Jake focus on to ensure that the hospital's network connectivity remains reliable? Exterior dynamic routing protocols Link state routing protocols

2/18/24, 9 : 15 PM Individual Response Page 3 of 12 about:srcdoc Distance vector routing protocols Interior dynamic routing protocols Explanation Jake should focus on exterior dynamic routing protocols to provide redundancy in internet connectivity and ensure that the medical equipment is constantly connected to the internet. BGP (Border Gateway Protocol) is an example of an exterior dynamic routing protocol. Interior dynamic routing protocols route paths within an autonomous system and are not used for connecting to external systems (including to the internet). Link state routing protocols and distance vector routing protocols are used for routing within an autonomous system. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_exterior_np6.question.fex Question 3. Correct

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2/18/24, 9 : 15 PM Individual Response Page 4 of 12 about:srcdoc Which of the following has the least default administrative distance? RIP Static route to an IP address OSPF External BGP Explanation A static route to an IP address has a default administrative distance of 1. The only thing that has a lower administrative distance is a connected interface or static route. When more than one protocol is enabled on a router, each protocol is given an administrative distance. When the best path is being determined, protocols with a lower administrative distance are chosen over those with a higher administrative distance. External BGP (Border Gateway Protocol) has an administrative distance of 20. RIP (Routing Information Protocol) has an administrative distance of 120. OSPF (Open Shortest Path First) has an administrative distance of 110. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_admin_distance_np6.question.fex Question 4. Correct

2/18/24, 9 : 15 PM Individual Response Page 5 of 12 about:srcdoc Under which of the following circumstances might you implement BGP on your company network and share routes with internet routers? If the network has over 15 hops. If the network is connected to the internet using multiple ISPs. If the network has over 15 areas and uses IPv6. If the network is connected to the internet using public addressing. Explanation Very large networks can use BGP internally, but they typically only share routes on the internet if the AS (autonomous system) has two or more connections to the internet through different ISPs. If your network has over 15 hops, use a routing protocol other than RIP. Use OSPF or IS-IS to divide your network into areas. Private networks that use public IP addresses do not need to share routes with internet routers. It is typically the ISP's responsibility to configure routes on the private network, even when public addressing is being used. A single route out of the private network is all that's required if the network has a single

2/18/24, 9 : 15 PM Individual Response Page 6 of 12 about:srcdoc connection to the internet. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_protocols_bgp_03_np6.question.fex Question 5. Correct A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned both networks. The next hop router for network 192.168.3.0 has changed. You need to make the change with the least amount of effort possible. What should you do? Stop and restart the RIP protocol on the router. Force RIP to perform an immediate update. Wait for convergence to take place. Manually reconfigure the default route to point to the new next hop router. Explanation When you use a routing protocol, changes in routing information take some time to be propagated to all routers on the network. The term convergence is used to describe the

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2/18/24, 9 : 15 PM Individual Response Page 7 of 12 about:srcdoc propagated to all routers on the network. The term convergence is used to describe the condition when all routers have the same (or correct) routing information. Static routes in a routing table must be updated manually. Restarting RIP might actually increase the time required for changes to be learned. Forcing an update (if the router supports it) is not a requirement, as the periodic sharing of routes will eventually update the routing table entry. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_protocols_convergence_01_np6.question.fex Question 6. Correct Which of the following routing protocols is a hybrid that uses a composite number for its metric based on bandwidth and delay? BGP EIGRP OSPF RIP Explanation Enhanced Interior Gateway Routing Protocol (EIGRP) is a hybrid protocol that uses a composite number for its metric based on bandwidth and delay.

2/18/24, 9 : 15 PM Individual Response Page 8 of 12 about:srcdoc RIP uses hop count as its metric and is for networks with 15 or less hops. OSPF is a link state routing protocol used for routing within an AS and uses relative link cost as its metric. BGP is an advanced distance vector protocol (also called a path vector protocol) that uses path, rules, and policies instead of a metric to make routing decisions. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_protocols_eigrp_01_np6.question.fex Question 7. Correct Which of the following are true of the IS-IS routing protocol? (Select two.) It is a classful protocol. A router is the boundary between one area and another. It uses bandwidth and delay for the metric. It supports IPv6 routing. It divides large networks into areas. It is best suited for small networks. Explanation IS-IS (Intermediate System to Intermediate System) is a link state routing protocol used for

2/18/24, 9 : 15 PM Individual Response Page 9 of 12 about:srcdoc IS-IS (Intermediate System to Intermediate System) is a link state routing protocol used for routing within an AS. IS-IS is classless and uses relative link cost for the metric. Large networks are divided into areas, and IS-IS is best suited for large, private networks. A network link is the boundary between one area and another. References 7.5.6 Routing Protocol Facts q_rounting_protocols_is_is_np6.question.fex Question 8. Correct What are the main differences between the OSPF and IS-IS routing protocols? OSPF requires an area 0, while IS-IS does not. OSPF is a link state protocol, while IS-IS is not. OSPF is an IGP routing protocol, while IS-IS is a BGP routing protocol. OSPF is a classful protocol, while IS-IS is a classless protocol. Explanation Like OSPF, IS-IS uses areas when designing the network. However, IS-IS does not require an area 0 like OSPF does. Because IS-IS was originally designed for non-IP protocols, it can more easily support IPv6 routing. Both OSPF and IS-IS have the following characteristics: Both are link state protocols. Both are classless protocols, supporting CIDR and VLSM. Both are interior gateway protocols that are used within an AS.

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2/18/24, 9 : 15 PM Individual Response Page 10 of 12 about:srcdoc References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_protocols_link_state_02_np6.question.fex Question 9. Correct What is the main difference between RIP and RIPv2? RIP has a limit of 15 hops, while RIPv2 increases the hop count limit. RIP is a distance vector protocol, while RIPv2 is a link state protocol. RIP use hop count for the metric, while RIPv2 uses a relative link cost. RIP is a classful protocol, while RIPv2 is a classless protocol. Explanation RIPv1 is a classful protocol, meaning that the subnet mask is not included in routing updates. With RIP, only the default subnet mask is used to identify networks. RIPv2 is a classless protocol, meaning that the subnet mask is included in routing updates. RIPv2 supports variable-length subnet masks (VLSM). Both RIP and RIPv1 are distance vector protocols and use hop count for the metric. RIP and

2/18/24, 9 : 15 PM Individual Response Page 11 of 12 about:srcdoc Both RIP and RIPv1 are distance vector protocols and use hop count for the metric. RIP and RIPv2 have a limit of 15 hops between any two networks. References 7.5.1 Routing 7.5.2 Routing Facts 7.5.4 Routing Protocol Characteristics Facts 7.5.5 Routing Protocols 7.5.6 Routing Protocol Facts q_rounting_protocols_rip_04_np6.question.fex Question 10. Correct You have only one physical interface but want to connect two IP networks. Which of the following would allow you to do so? Virtual IPs Subinterfaces The sticky feature A loopback address Explanation You can use subinterfaces to connect two IP networks through one parent physical interface. Each subinterface is given its own IP information and data can then be routed from one network to the other through the physical interface. A loopback address is a special IP address used for diagnostics and for troubleshooting the TCP/IP stack. Virtual IPs (VIPs) are IP addresses that are not associated with a single device. Multiple devices with an internet connection can share a VIP. They are used for one-to-many Network Address Translation, mobility, and fault tolerance.

7.5.11 Practice Questions

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