Exam MTCRE, 24 Maret 2024

Please see the network diagram. A packet with destination address 10.11.12.5 passes via Mikrotik Router 1. In addition to the connected routes the routes the router has following routes added to the routing table : Mikrotik Router 1 : /ip route add dst-address=10.11.12.0/24 gateway=1.1.1.2 Mikrotik Router 2: /ip route add dst-address=10.11.12.0/24 gateway=2.2.2.2 Mikrotik Router 3: /ip route add dst-address=10.11.12.0/24 gateway=3.3.3.2 What will happen ?

• MikroTik Router 3 will discard the packet
• There will be infinite loop until one of routers is disabled
• Packet will reach the destination
• There will be infinite loop until TTL of packet is equal to 1

What is the type of a router that always connected to more than one OSPF area ?

• Autonomous System Border Router (ASBR)
• Area Border Router (ABR)
• Stub Area Router (SAR)
• Internal Router (IR)

Consider the following diagram. Assuming that all the necessary configuration has already been done on R2 (proxy-arp is disabled), to communicate from a device on LAN1 to a device on LAN2, which of the following configurations on R1 would enable this?

• /ip route add dst-address=0.0.0.0/0 gateway=192.168.99.2
• /ip route add dst-address=0.0.0.0/0 gateway=Ether1
• /ip route add dst-address=192.168.1.0/24 src-address=192.168.0.0/24 gateway=192.168.99.2
• /ip route add dst-address=192.168.0.0/24 gateway=192.168.0.1
• /ip route add dst-address=192.168.1.0/24 gateway=192.168.99.2

If one of two gateways is unreachable in an ECMP route with check gateway set, 50% of packets will be lost

• True
• False

When sending out an ARP request, an IP host is expecting what kind of address for an answer?

• IP Address
• MAC Address
• VLAN ID
• 802.11g

You have a router with configuration - Public IP :202.168.125.45/24 - Default gateway:202.168.125.1 - DNS server: 248.115.148.136, 248.115.148.137 - Local IP: 192.168.2.1/24 Mark the correct configuration on client PC to access to the Internet

• IP:192.168.2.253/24 gateway:202.168.0.1
• IP:192.168.1.223/24 gateway:248.115.148.136
• IP:192.168.0.1/24 gateway:192.168.2.1
• IP:192.168.2.2/24 gateway:202.168.125.45
• IP:192.168.2.115/24 gateway: 192.168.2.1

When using the "check gateway" function in creating a route, the following protocols can be utilized to ensure the gateway address is reachable (choose all correct answers)

• UDP
• ICMP
• ARP
• MNDP

There are two routes in the routing table: 0 dst-addr=10.1.1.0/24 gateway=5.5.5.5 1 dst-addr=10.1.1.4/30 gateway=5.6.6.6 Which gateway will be used to get to the IP address 10.1.1.6?

• 5.6.6.6
• both - half of the traffic will be routed through one gateway, half through the other
• 5.5.5.5
• the required route is not in the routing table

The 'check-gateway' option is enabled for one route. Select all statements that are true

• Check gateway option can be configured for Ping, ARP and RARP (reverse ARP)
• In case of failure of the gateway, routes pointing to that gateway will become inactive
• Gateway is checked every 10 seconds and after a single failure, the gateway is considered unreacheable
• Gateway is checked every 10 seconds and after 2 failures, the gateway is considered unreacheable

For user (one entry) in local PPP Secrets/PPP Profiles database, it is possible to

• Allow/deny use of more than one login by this user
• Allow login by PPPoE and PPTP, but deny login by L2TP
• Set max values for transferred data (Rx/Tx)
• Allow only PPPoE login
• Deny services (like telnet) only for this user or for one group of users