IP Connectivity

A network administrator is configuring static routing on router R1 to forward traffic toward network 2001:db8:3c4d:10::/64. The administrator intends to use the link-local address fe80::211:22ff:fe33:4455 of the neighboring router connected to local interface GigabitEthernet0/1. Which Cisco IOS command correctly configures this static route?

An network administrator reviews routing table entries using the `show ip route` command on a Cisco IOS router. Which two statements correctly describe components of an IPv4 routing table entry?

A network administrator is inspecting the IPv4 routing table on a Cisco IOS XE router using the `show ip route` command. Match each routing table entry line on the left to its corresponding architectural component description on the right.

A Cisco router has the following interface operational statuses and IPv4 configurations:

- GigabitEthernet0/0 ($192.168.50.1/24$): line protocol up, operational state UP
- GigabitEthernet0/1 ($192.168.100.1/24$): line protocol up, operational state UP
- Loopback 0 ($10.254.1.1/32$): administratively down, line protocol down
- Loopback 1 ($10.200.1.1/32$): line protocol down, operational state DOWN
- Loopback 2 ($172.16.20.1/32$): line protocol up, operational state UP

The OSPFv2 routing process is initialized using `router ospf 1` without an explicitly configured static Router ID via the `router-id` command. What exact IPv4 address will OSPFv2 elect as the active Router ID for this process?

A network administrator is configuring a backup route on a Cisco IOS router to reach a remote branch office network with the prefix $2001:\text{db8}:\text{fedc}:9900::/56$. The primary path is currently provided by OSPFv3 with an administrative distance of $110$. The administrator must configure a floating static route using the next-hop router's link-local address $fe80::cafe:1$ over the local exit interface $GigabitEthernet0/0/1$. Which command correctly configures this backup floating static route on the router?

Refer to the following routing table output from a Cisco router:

text
Gateway of last resort is not set

10.0.0.0/8 is subnetted, 4 subnets
C 10.10.20.0/20 is directly connected, GigabitEthernet0/0
S 10.10.20.0/24 [1/0] via 172.16.1.1
O 10.10.20.128/25 [110/20] via 172.16.2.1
D 10.10.20.144/28 [90/307200] via 172.16.3.1

The router receives an IPv4 packet destined for host 10.10.20.150. Which two statements regarding the router forwarding decision are correct?

Two directly connected Cisco routers are configured to run OSPFv2 on their connecting GigabitEthernet interfaces. Interface GigabitEthernet0/0 on Router A is placed in OSPF Area 0, while interface GigabitEthernet0/0 on Router B is placed in OSPF Area 1. Which statement correctly describes the result of this configuration?

An enterprise router displays the following output from the `show ip route` command:

text
Gateway of last resort is not set

172.20.0.0/16 is subnetted, 4 subnets
S 172.20.0.0/16 [1/0] via 10.10.10.1
O 172.20.8.0/21 [110/65] via 10.10.20.1, 00:08:12, GigabitEthernet0/0/1
D 172.20.12.0/23 [90/2578560] via 10.10.30.1, 00:22:45, GigabitEthernet0/0/2
O 172.20.13.0/25 [110/110] via 10.10.40.1, 00:03:50, GigabitEthernet0/0/3

The router receives a packet with a destination IPv4 address of $172.20.13.45$. Based on the routing table components and forwarding logic, which next-hop IP address and outbound interface will the router select to forward this packet?

A Cisco router receives an IPv4 packet on an ingress interface destined for a remote destination host. In what exact sequence does the router execute its internal forwarding decision and frame processing logic from packet arrival to egress transmission?

A network engineer views the following line in a Cisco router's IPv4 routing table:

`O 10.50.4.0/24 [110/65] via 172.16.1.2, 00:18:32, GigabitEthernet0/1`

What component of the routing table entry is represented by the value `110` inside the brackets?

A network administrator is configuring static routing on router HQ to forward traffic bound for remote subnet $2001:\text{db8}:\text{feed}:10::/64$. The outbound connection uses a point-to-point serial-like Ethernet link where the remote router interface uses the link-local address $\text{fe80}::21a:2bff:\text{fe3c}:4d5e$ on interface GigabitEthernet0/0/1. The primary path must use an administrative distance of $1$, but if configured using a link-local next-hop address without an outbound interface specified, Cisco IOS will reject the command. Which command correctly establishes a fully-specified IPv6 static route for this destination using the link-local next hop?

A Cisco router is configured to run OSPFv2 without an explicitly set `router-id` under the OSPF process. The current interface IP address configurations and states are as follows:

- Loopback0: $10.10.10.10/32$ (Administratively Down)
- Loopback1: $172.16.1.1/24$ (Up / Up)
- Loopback2: $192.168.100.1/24$ (Up / Up)
- GigabitEthernet0/0: $10.200.200.1/30$ (Up / Up)

What IP address will OSPF select as the router ID when the OSPF process initializes?

Refer to the following partial IPv4 routing table output from a Cisco router:

text
Gateway of last resort is not set

172.16.0.0/16 is variably subnetted, 4 subnets, 4 masks
O 172.16.10.0/24 [110/20] via 192.168.1.1, 00:05:12, GigabitEthernet0/0
D 172.16.10.0/25 [90/307200] via 192.168.1.2, 00:12:44, GigabitEthernet0/1
S 172.16.10.128/26 [1/0] via 192.168.1.3, 01:15:00, GigabitEthernet0/2
C 172.16.10.128/30 is directly connected, GigabitEthernet0/3

The router receives a packet destined for IP address 172.16.10.130. Which interface or next-hop IP address will the router select to forward this packet?

Two Cisco routers, R1 and R2, are directly connected via their GigabitEthernet 0/0 interfaces in OSPFv2 Area 0. An administrator configures `ip ospf hello-interval 5` on R1's GigabitEthernet 0/0 interface, while R2's interface retains the default OSPF Hello interval of 10 seconds. What is the impact of this configuration on the OSPF neighbor relationship between R1 and R2?

A network administrator is configuring IPv6 static routing on router R1 to reach the destination network $2001:\text{db8}:\text{acad}:10::/64$. Router R1 connects to neighboring router R2 via interface GigabitEthernet0/0/1. Router R2's connected interface has a global unicast address of $2001:\text{db8}:\text{acad}:12::2/64$ and a link-local address of $\text{fe80}::2$.

Which two Cisco IOS commands represent valid IPv6 static route configurations on R1? (Select two.)

An engineer is configuring a backup fully-specified IPv6 static route on router R1 toward the remote destination network $2001:\text{db8}:500:10::/64$. The primary path is learned via OSPFv3. The backup route must forward traffic to the next-hop router's link-local address $\text{fe80::2}$ via local interface GigabitEthernet0/1 with an administrative distance of 130. Complete the required Cisco IOS configuration command.

A Cisco router running OSPFv2 has no manually configured router ID (`router-id` command). The router has the following active and operational interfaces configured with IP addresses:

- Loopback 0: 10.10.10.1/32
- Loopback 1: 172.16.50.1/32
- GigabitEthernet0/0: 192.168.1.1/24
- GigabitEthernet0/1: 192.168.2.1/24

What IP address will OSPF automatically select as the OSPF Router ID?

An enterprise edge router receives internal routing updates for the prefix $192.168.50.0/24$ via OSPFv2 (Administrative Distance 110) and iBGP (Administrative Distance 200). A network administrator intends to provision a floating static route via next-hop $10.0.12.2$ that remains inactive during normal operation, activates as a backup if the OSPF path fails, and takes precedence over the iBGP path. The administrator executes the following Cisco IOS command:

`ip route 192.168.50.0 255.255.255.0 10.0.12.2 105`

What is the operational result of this configuration, and what modification is required to achieve the desired routing behavior?

A network administrator is configuring a backup floating static IPv6 route on router R1 to reach the remote prefix $2001:\text{db8}:\text{acad}:44::/64$. The primary route to this subnet is learned via OSPFv3 with an administrative distance of 110. The administrator wants to route backup traffic through the link-local address $fe80::211:23ff:fe45:6789$ of the neighboring router connected to interface $GigabitEthernet0/0/1$, assigning an administrative distance of 130. Which Cisco IOS command correctly configures this floating static route?

A router receives routes for the destination network 10.20.0.0/16 dynamically from OSPF, which uses a default administrative distance of 110. A network administrator needs to create a backup static route for this network using the next-hop address 192.168.1.2 so that it only becomes active if the primary OSPF path fails. Which Cisco IOS command correctly configures this floating static route?