SEC - 160 5-10

host address: 192.168.100.161/25 203.0.113.100/24 network address: 10.10.10.128/25 172.110.12.64/28 broadcast address: 192.168.1.191/26 10.0.0.159/27

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private

1. When a wireless network in a small office is being set up, which type of IP addressing is typically used on the networked devices?

the domain name mapped to mail exchange servers

10. What type of information is contained in a DNS MX record?

10 segments

12. A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?

host unreachable

13. A user issues a ping 192.168.250.103 command and receives a response that includes a code of 1 . What does this code represent?

netstat -r route print

14. Which two commands can be used on a Windows host to display the routing table? (Choose two.)

protocol unreachable

15. A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2 . What does this code represent?

the ICMPv6 Router Advertisement

16. What message informs IPv6 enabled interfaces to use stateful DHCPv6 for obtaining an IPv6 address?

to provide feedback of IP packet transmissions

17. What is the purpose of ICMP messages?

4xx = client error 3xx = redirection 2xx = sucess 1xx = information 5xx = server error

18. Match the HTTP status code group to the type of message generated by the HTTP server.

DNS

19. What network service uses the WHOIS protocol?

host portion network portion

2. Which two parts are components of an IPv4 address? (Choose two.)

It sends a DHCPREQUEST that identifies which lease offer the client is accepting.

20. What action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?

inside global

21. Refer to the exhibit. From the perspective of users behind the NAT router, what type of NAT address is 209.165.201.1?

It is encapsulated in a Layer 2 frame.

23. What is done to an IP packet before it is transmitted over the physical medium?

segment

24. Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?

client/server

25. Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?

multicast

26. Which type of transmission is used to transmit a single video stream such as a web-based video conference to a select number of users?

the MAC address of the G0/0 interface on R1

27. Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply?

Client information is stolen.

28. What is the result of an ARP poisoning attack?

to request an HTML page from a web server

29. What is the function of the HTTP GET message?

SMB

30. Which protocol is a client/server file sharing protocol and also a request/response protocol?

A DHCPDISCOVER message is sent with the broadcast IP address as the destination address.

31. How is a DHCPDISCOVER transmitted on a network to reach a DHCP server?

32. What is a description of a DNS zone transfer?

32. What is a description of a DNS zone transfer?

64 bytes 1518 bytes

33. What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.)

DHCP

34. Which process failed if a computer cannot access the internet and received an IP address of 169.254.142.5?

IP relies on upper layer services to handle situations of missing or out-of-order packets.

35. Which statement describes a feature of the IP protocol?

connectionless

36. What is a basic characteristic of the IP protocol?

Tracert shows each hop, while ping shows a destination reply only.

37. Which statement describes the ping and tracert commands?

bring your own device

38. A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

2001:0420:0059:0000:0001:0000:0000:000a

4. What is the full decompressed form of the IPv6 address 2001:420:59:0:1::a/64?

router advertisement messages received from the link router

40. Which method would an IPv6-enabled host using SLAAC employ to learn the address of the default gateway?

host unreachable

42. A user issues a ping 192.168.250.103 command and receives a response that includes a code of 1. What does this code represent?

identifying the applications and services on the client and server that should handle transmitted data meeting the reliability requirements of applications, if any multiplexing multiple communication streams from many users or applications on the same network

43. What are three responsibilities of the transport layer? (Choose three.)

It can detect open TCP ports on network systems.

44. How does network scanning help assess operations security?

retransmitting any unacknowledged data acknowledging received data

46. Which two operations are provided by TCP but not by UDP? (Choose two.)

when the value in the TTL field reaches zero

47. A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet?

.

48. A network administrator is testing network connectivity by issuing the ping command on a router. Which symbol will be displayed to indicate that a time expired during the wait for an ICMP echo reply message?

IMAP

49. A technician is configuring email on a mobile device. The user wants to be able to keep the original email on the server, organize it into folders, and synchronize the folders between the mobile device and the server. Which email protocol should the technician use?

arp -a

5. A cybersecurity analyst believes an attacker is spoofing the MAC address of the default gateway to perform a man-in-the-middle attack. Which command should the analyst use to view the MAC address a host is using to reach the default gateway?

data link layer

50. At which OSI layer is a source MAC address added to a PDU during the encapsulation process?

Time-to-Live

51. Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?

route unreachable protocol unreachable

53. Which two ICMP messages are used by both IPv4 and IPv6 protocols? (Choose two.)​

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

54. What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

1000:00d8:0058:00ab

55. A device has been assigned the IPv6 address of 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64. Which is the host identifier of the device?

DHCP FTP DNS

56. What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

The computer has an invalid default gateway address.

57. A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

RT1 will send an ARP reply with its own Fa0/0 MAC address.

58. Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

to test that the host has the capability to reach hosts on other networks

59. A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?

the MAC address of the default gateway

6. A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination?

ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.

60. A user gets an IP address of 192.168.0.1 from the company network administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?

62

61. How many host addresses are available on the 192.168.10.128/26 network?

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16

62. What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)

router DG

63. Refer to the exhibit. A cybersecurity analyst is viewing captured packets forwarded on switch S1. Which device has the MAC address 50:6a:03:96:71:22?

DHCPACK

64. A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information?

The PC is configured to obtain an IP address automatically.

65. An employee complains that a Windows PC cannot connect to the Internet. A network technician issues the ipconfig command on the PC and is shown an IP address of 169.254.10.3. Which two conclusions can be drawn? (Choose two.)

The tracert command shows the information of routers in the path.

66. What is a function of the tracert command that differs from the ping command when they are used on a workstation?

It is responsible for Media Access Control. It adds a header and trailer to form an OSI Layer 2 PDU.

67. Which two functions or operations are performed by the MAC sublayer? (Choose two.)

Destination Address

68. Which field in an IPv4 packet header will typically stay the same during its transmission?

destination MAC address to a destination IPv4 address

7. What addresses are mapped by ARP?

IP address to MAC address mappings

8. What type of information is contained in an ARP table?

downloads copies of email messages to the client requires a larger amount of disk space original messages must be manually deleted

IMAP

desirable for an ISP or large business mail is deleted as it is downloaded does not require a centralized backup solution

POP characteristics

TCP: FTP, HTTP, SMTP. UDP: TFTP, DHCP.

TCP AND UDP Services

message sizing

the process of breaking up a long message into individual pieces before being sent over the network

message encoding

the process of converting information from one format to another acceptable for transmission

message encryption

the process of placing one message format inside another message format