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1. Which of the following is not a task handled by a router? |
a. A router forwards broadcasts over the network. |
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2. In the event of a duplicate MAC address shared by two hosts on a switched network, what statement is accurate? |
c. The hosts will still send and receive traffic, but traffic may not always reach the correct destination. |
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3. Which command will produce statistics about each message transmitted by a host, separated according to protocol type? |
b. netstat -s |
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4. When using the Routing Information Protocol (RIP), what is the maximum number of hops a message can take between its source and its destination before the destination is considered unreachable? |
b. 15 |
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5. In IPv6, what field is used to indicate what sequence of packets from one source to one or multiple destinations a packet belongs to? |
c. flow label |
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6. What happens when a router receives a packet with a TTL of 0? |
a. The router drops the packet and sends an ICMP TTL expired message back to the host. |
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7. By default, what is the MTU size on a typical Ethernet network? |
b. 1500 bytes |
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8. You are connected to your network’s Cisco router, and need to verify the route table. What command should you enter? |
b. show ip route |
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9. What IPv6 field is similar to the TTL field in IPv4 packets? |
c. hop limit |
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10. You have been tasked with the replacement of OSPF with EIGRP throughout your organization, which consists of a mixture of Cisco routers and routers from other vendors. What statement is accurate? |
c. EIGRP may not be available on non-Cisco routers. |
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11. Which routing protocol started as a Cisco proprietary protocol and combines some of the features of a link-state protocol with that of distance-vector protocols? |
d. EIGRP |
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12. What field in an IPv4 packet informs routers the level of precedence they should apply when processing an incoming packet? |
a. Differentiated Services (DiffServ) |
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13. What occurs when a collision happens on a network? |
d. Each node on the network waits a random amount of time and then resends the transmission. |
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14. The IP connectionless protocol relies on what other protocol to guarantee delivery of data? |
c. TCP |
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15. What statement regarding the differences between the Windows tracert utility and the Linux/UNIX/macOS traceroute utility is accurate? |
b. By default, the tracert utility uses ICMP echo requests, while traceroute uses UDP datagrams or TCP SYN messages. |
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16. Which statement does NOT accurately describe characteristics of the OSPF protocol? |
d. OSPF requires very little CPU or memory resources. |
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17. What is routing protocol convergence time defined as? |
a. It is the time it takes for the protocol to recognize the best path in the event of a network change. |
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18. Which traceroute command will perform a trace using ICMP echo requests instead of UDP datagrams to the host srv1.mycompany.com? |
d. traceroute -I srv1.mycompany.com |
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19. In a TCP segment, what field indicates how many bytes the sender can issue to a receiver before acknowledgment is received? |
b. sliding-window |
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20. Which statement regarding the Border Gateway Protocol (BGP) is accurate? |
c. BGP utilizes TCP for communicating updates. |
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21. What tcpdump command can be used to filter out all traffic except SSH traffic? |
a. tcpdump port 22 |
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22. If the VLAN tag is present in an Ethernet frame, what is the maximum frame size? |
d. 1522 bytes |
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23. What utility is the equivalent to the pathping command on a Linux system? |
a. mtr |
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24. Originally codified by ISO, what does the "intermediate system" in IS-IS (Intermediate System to Intermediate System) stand for? |
d. An IS-IS capable network router. |
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25. What routing metric affects a path’s potential performance due to delay? |
c. latency |
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