Your Networking Q&A, Simplified by NB
Here you’ll find expert answers to all the networking questions we post on our LinkedIn page. Stay updated, learn from real discussions, and strengthen your networking skills with Network Bulls!”
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Ques - 1 |
Your manager asks you which service is responsible for translating the source IP address of a packet to the IP address of the public interface on the router? (A) DHCP |
| Answer | (B) NAT is responsible for translating the source IP address of a packet to use the IP of the public interface on the NAT device. |
| Ques. - 2 |
Which network service can be configured on your router that is responsible for assigning IP addresses to systems on the network? (A) DHCP |
| Answer | (A) DHCP The DHCP service is responsible for assigning IP addresses automatically to systems on the network. |
| Ques - 3 |
What service on the network is responsible for converting the FQDN to an IP address?
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| Answer |
(B)DNS DNS is responsible for converting the friendly name, such as www.gleneclarke.com, to an IP address. |
| Ques - 4 |
You are monitoring network traffic and you notice a number of DHCP discover messages on the network. Which of the following is the destination address of the DHCP discover message? (A) 0F-1B-3C-2F-3C-2A(B) FF-FF-FF-FF-FF-FF (C) 192.168.4.5 (D) 192.168.0.0 |
| Answer |
(B) FF-FF-FF-FF-FF-FF The DHCP discover message is a broadcast message which is used to locate the DHCP server on the network. FF-FF-FF-FF-FF-FF is the layer-2 representation of a broadcast address |
| Ques - 5 |
When a client system boots up and requests an IP address, it first must send out which message? (A) DHCP request |
| Answer |
(B). DHCP discover The DHCP discover message is the first message sent out by a DHCP client to locate a DHCP server on the network. The DHCP discover message is a broadcast message which has a destination MAC address of FF-FF-FF-FF-FF-FF. |
| Ques - 6 |
Which of the following is a layer-3 device? |
| Answer |
(B). Router |
| Ques - 7 | A group of systems that can receive one another’s broadcast messages is known as a __________________. (A) Collision domain (B) Active directory domain (C) Fully qualified domain name (D) Broadcast domain |
| Answer |
(D)- Broadcast domain |
| Ques - 8 |
A group of systems that can have their data collide with one another is known as a ____________________. |
| Answer |
(C). Collision domain |
| Ques - 9 |
What layer of the OSI model is responsible for breaking the data into smaller segments? |
| Answer | (D). Transport The transport layer is responsible for breaking the data into smaller chunks called segments. |
| Ques - 10 | Which layer of the OSI model is responsible for routing and logical addressing? (A) Network (B) Physical (C) Data link (D) Transport |
| Answer | (A). Network The network layer is responsible for logical addressing and routing. |
| Ques - 11 | Which of the following are considered layer-2 devices? (Choose two.) (A) Bridge (B) Router (C) Repeater (D) Switch (E) Hub |
| Answer | (A). Bridge, (D). Switch Both bridges and switches run at layer 2 and are devices that filter traffic by the MAC address. |
| Ques - 12 | Which of the following are considered layer-1 devices? (Choose two.) (A) Bridge (B) Router (C) Repeater (D) Switch (E) Hub |
| Answer | (C). Repeater, (E). Hub A hub and a repeater are examples of layer-1 devices. Remember that a layer-1 device works with the electrical signal. |
| Ques - 13 | What is the application layer protocol for receiving e-mail over the Internet? (A) FTP (B) SMTP (C) SNMP (D) POP3 |
| Answer | ( D). POP3 POP3 is the Internet protocol for receiving e-mail, whereas SMTP is the Internet protocol for delivering e-mail. |
| Ques - 14 | Which Gigabit Ethernet standard uses UTP cabling to reach 1000 Mbps? (A) 1000BaseTX (B) 1000BaseSX (C) 1000BaseCX (D) 1000BaseLX |
| Answer | (A). 1000BaseTX The Gigabit Ethernet standard that uses UTP cabling is 1000BaseTX. |
| Ques - 15 | Which of the following addresses does a router use to determine where a packet needs to be delivered? (Choose two.) (A) 24.56.78.10 (B) 00-3B-4C-2B-00-AF (C) A layer-3 address (D) A layer-2 address |
| (A). 24.56.78.10 (C). A layer-3 address Routers use layer-3 addresses to determine where to send a packet. |
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