Intro to networks final exam study guide

Which two tasks functions of the presentation layer? 2 answers

-Compression -encryption

What are two ways that TCP uses the sequence numbers in a segment?

-To identify missing segments at the destination -to reassemble the segments at the remote location

Which domain name would be an example of a top-level domain?

.com

Which subnet would include the address 192.168 .1 .96 as a usable host address?

19 2.168.1.64/26

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

255.255.255.126

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

62

Which scenario describes a function provided by the transport layer?

A student has two web browser windows open in order to access two websites. The transport layer ensures the correct web page is delivered to the correct browser window.

A wireless host needs to request an IP address what protocol would be used to process the request?

DHCP

Which range of link-local addresses can be assigned to an ipv6-enabled interface?

FE80::/10

When applied to a router, which command would help mitigate brute-force password attacks against the router?

Login block-for 60 attempts 5 within 60

Which example of malicious, code would be classified as a Trojan horse?

Malware that written to look like a video game.

What is a key characteristic of the peer-to-peer networking model?

Resource sharing without A dedicated server

A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair what happens to the IP address configuration?

The address is returned to the pool for reuse when the lease expires

A user opened free browsers on the same PC to access WWW. Cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. which information is used by the tcp/ip protocol stack in the PC to identify which of the three web browsers should receive the reply?

The destination port number.

Which statement is true about variable length subnet masking?

The size of each subnet may be different depending on requirement

A technician can ping the IP address of a remote company but cannot successfully ping three URL address of the same web server. Which software utility can the technician use to diagnose the problem?

nslookup