Quiz 4: TCP/IP and Internet Protocol
Which of the following would a Cisco router most likely use to designate a default route? a. 0.0.0.0 b. 127.0.0.1 c. 224.0.0.1 d. 255.255.255.255
a. 0.0.0.0
Which of the following services provides, upon network request, MAC address information to devices that need to know another device's MAC address? a. ARP b. DHCP c. DNS d. RARP
a. ARP
You are the administrator for an organization that has a need for over 48,000 publicly-routable IP addresses. Which of the following would be the minimum classful address type required for this organization, assuming a single, contiguous subnet range? a. Class A b. Class B c. Class C d. Class D
a. Class A
On which Layer of the DoD model would sequencing of data units sent reliably over an established connection occur? a. Host-to-Host b. Internet c. Network Access d. Process/Application
a. Host-to-Host
Which of the following IP addresses is publicly-routable? a. 10.20.17.4 b. 110.3.122.248 c. 172.16.49.8 d. 192.168.0.102
b. 110.3.122.248
You have a Windows 7 laptop, and you run the following command from the command prompt: ping 0:0:0:0:0:0:0:1 You get a response. Which of the following is the most likely equivalent address to the one you just reached? a. 4.2.2.2 b. 127.0.0.1 c. 192.168.0.1 d. 192.168.1.255
b. 127.0.0.1
You boot a workstation with no static IP address set, and this workstation is not connected to any wireless or wired network. Which of the following would be the most likely IP address found if one was to run the command 'ipconfig'? a. 128.186.93.10 b. 169.254.0.92 c. 192.168.20.1 d. 224.0.0.25
b. 169.254.0.92
You see the following at a command prompt: Interface: 172.16.1.15 --- 0xb Internet Address Physical Address Type 172.16.1.1 00-00-03-dc-12-7b dynamic 172.16.1.19 00-00-8a-44-16-e4 dynamic 172.16.1.93 00-00-00-a4-6e-aa dynamic By which process was the information above collected and stored? a. APIPA b. ARP c. DHCP d. DNS
b. ARP
Which of the following classful IP address classes would have sixteen network bits and sixteen host bits? a. Class A b. Class B c. Class C d. Class D
b. Class B
Which of the following services provides, upon network request, IP addresses to devices that need them? a. ARP b. DHCP c. DNS d. RARP
b. DHCP
A network client broadcasts a request to determine whether or not their are any servers available to assign to this client an IP address. Which of the following is the first broadcast that this client will send out in this process? a. ACK b. Discover c. Offer d. Request
b. Discover
Which message does a host first send to signal another host that it wishes to terminate an OSI Transport Layer connection? a. ACK b. FIN c. SYN d. SYN-ACK
b. FIN
You are designing a network, and you have decided that, for security purposes, you will NAT a relatively small number of external public IP addresses to a vast number of private, non-publically-routable internal IP addresses. You want the ability to have about twelve million hosts in your internal network, all with unique addresses. Would the 172.16.0.0 to 172.16.255.255 range suffice for this task? a. YES b. NO
b. NO
In the diagram below, data is being encapsulated for subsequent processing as it moves "down" a protocol stack for eventual transmission across the OSI Physical Layer. Between the red horizontal lines, you will see a PDU being processed, with the header information at that processing stage represented by the larger type font. On which OSI Layer does the header information being added (larger type font) operate? a. Application Layer b. Network Layer c. Presentation Layer d. Transport Layer
b. Network Layer
Which of the following transmission modes coordinates routing and switch port and host subscription so that streaming traffic is directed only where and to what it needs to go, optimizing network resource utilization? a. broadcast b. multicast c. Rapid Spanning Tree Protocol (RSTP) d. unicast
b. multicast
You request from your ISP an IP address block that allows at least 250 publicly-routable and contiguously-numbered IP addresses. Which of the following is the smallest IP address class that would serve your needs a. Class A b. Class B c. Class C d. Class D
c. Class C
Which of the following services provides, upon network request, IP addresses to correspond to fully-qualified domain names? a. ARP b. DHCP c. DNS d. RARP
c. DNS
Which message does a host first send to signal another host that it wishes to establish an OSI Transport Layer connection? a. ACK b. FIN c. SYN d. SYN-ACK
c. SYN
The diagram below describes a header for which of the following protocols? see diagram on quiz a. IEEE 802.3 b. IP c. TCP d. UDP
c. TCP
You have a need to use a Windows 7 workstation to remotely view the desktop environment on a Windows 2012 Server. You decide to use the tools built into both operating systems. Using the diagram below, which OSI Presentation Layer protocol would perform the encryption for these remote control sessions? a. ASCII b. TCP c. TLS d. UDP
c. TLS
You have designed a small network, and have decided to adopt a security posture of "Anything that isn't explicitly permitted, is forbidden." Your firewall is configured to disallow any outgoing traffic types that aren't specifically allowed. Your firewall is configured as such, for outgoing traffic: TCP PORT 22 ALLOWTCP PORT 80 ALLOWTCP PORT 443 ALLOWUDP PORT 53 ALLOWALL ELSE DENY Your server administrator informs you that, over a period of months, the time on her servers is drifting, and becoming more inaccurate by the week. She has already confirmed that her servers are configured properly, and suspects a network issue. You inspect your firewall. Which of the following might you try adding to your firewall configuration? a. TCP PORT 53 DENY b. TCP PORT 587 ALLOW c. UDP PORT 123 ALLOW d. UDP PORT 161 ALLOW
c. UDP PORT 123 ALLOW
Your workstation just transmitted an IP packet with all binary ones in the destination field of the IP header. What would the Ethernet switch directly connected to your workstation most likely do with the frame encapsulating such a packet? a. drop the frame immediately at the first Ethernet port at which it arrives b. forward it to all Ethernet ports c. forward it to all Ethernet ports except for the port connected to your workstation d. transmit an ARP request of its own to determine which MAC address is assigned to this IP address
c. forward it to all Ethernet ports except for the port connected to your workstation
You are asked to see if you can find any multicast IP addresses in use on your network. You run the command arp -a at the command prompt of a network device. You see in the output of this command several IP addresses. Which one is most likely to represent an IP address used for multicast? a. 4.2.2.2 b. 169.254.123.45 c. 192.168.1.255 d. 224.0.0.82
d. 224.0.0.82
A server provides secure web services. Which TCP port would this service most likely be listening on? a. 22 b. 80 c. 161 d. 443
d. 443
A managed network device experiences an event - one of its managed ports goes DOWN - and this device sends a UDP message (trap) to a central management server. What is the name of the service that will receive this trap? a. DHCP b. DNS c. POP3 d. SNMP
d. SNMP
The diagram below describes a header for which of the following protocols? a. IEEE 802.3 b. IP c. TCP d. UDP
d. UDP
An HTTP client needs to download content from an HTTP server. Which of the following processes is used to establish a bidirectional link between client and server? a. call forwarding b. Frame Check Sequence (FCS) c. port mirroring d. three-way handshake
d. three-way handshake
Of the following devices, check all that contain MAC tables. (Select three) a. hub b. Layer 4 firewall c. repeater d. router e. switch
e. switch
